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高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078

signal

noun
 
/ˈsɪɡnəl/
/ˈsɪɡnəl/
jump to other results
  1.  
     a movement or sound that you make to give somebody information, instructions, a warning, etc.信号；暗号 synonym sign
    • a danger/warning/distress signal危险/警告/遇险信号
    • at a signal At an agreed signal they left the room.收到约定的信号后，他们离开了房间。
    • signal to somebody She made an impatient signal to him, but he ignored her.她对他发了急躁的信号，但他无视她。
    • signal to do something He thought he had heard the referee's signal to proceed.他以为自己已经听见了裁判发出的信号。
    • signal for somebody to do something The siren was a signal for everyone to leave the building.警报器一响，就是要所有人离开大楼。
    • signal (that)… We spotted the scout's signal that four enemy soldiers were coming towards us.我们发现了侦察员的信号，即有四名敌军士兵向我们袭来。
    • signal from somebody Wait for the signal from the leader of your group.等你们组的组长发出信号。
    • When I give the signal, run!我一发信号，你就跑！
    • (North American English) All I get is a busy signal when I dial his number (= his phone is being used).我什么时候拨他的电话听到的都是忙音。
    • hand signals (= movements that cyclists make with their hands to tell other people that they are going to stop, turn, etc.)（骑车人和驾车人的）示意手势
    see also smoke signal, turn signal
    Extra Examples
    • At a pre-arranged signal, everyone started cheering.按照预先约好的信号，大家都开始欢呼起来。
    • He had arranged a signal for the band to begin.他约定了乐队开始演奏的信号。
    • She made a signal for the car to stop.她打了个手势，让汽车停下了。
    • The insect's yellow spots act as a warning signal to its predators.昆虫身上的黄点是向其天敌发出的警告信号。
    • The brain interprets the signals from the retina as light.大脑把来自视网膜的信号解读为光。
    • The nerves carry these signals to the brain.神经把这些信号传给大脑。
    Oxford Collocations Dictionaryadjective
    • clear
    • unmistakable
    • agreed
    • …
    verb + signal
    • give (somebody)
    • make
    • send
    • …
    signal + verb
    • come from something
    • indicate something
    preposition
    • at a signal
    • on a signal
    • signal for
    • …
    See full entry
  2.  
     a piece of equipment that uses different coloured lights to tell drivers to go slower, stop, etc., used especially on railways and roads（尤指铁路和公路上的）指示灯，信号灯，红绿灯
    • The traffic signals were on red.交通信号亮着红灯。
    • a stop signal停车信号
    • Delays are occurring as a result of signal failure on the northbound line.由于北行信号故障而产生延迟。
    Topics Transport by car or lorryb1
    Oxford Collocations Dictionaryadjective
    • railroad
    • railway
    • traffic
    • …
    verb + signal
    • operate
    signal + verb
    • be on red/​green
    • be red/​green
    • fail
    • …
    signal + noun
    • box
    • failure
    See full entry
  3.  
     a series of electrical waves that carry sounds, pictures or messages, for example to a radio, television or mobile phone（传输声音、图像或其他信息的电波）信号
    • radio signals无线电讯号
    • TV signals电视信号
    • a digital signal数字信号
    • a high-frequency signal高频信号
    • a radar signal雷达信号
    • to emit a signal发射信号
    • to detect/pick up signals探测到／收到信号
    • I couldn't get a signal on my phone.我无法在手机上收到信号。
    • The signal is received by three different antennas at slightly different times.信号由三个不同的天线在略微不同的时间接收。
    • The satellite is used for transmitting signals around the world.该卫星用于在世界范围内传输信号。
    • signal from something The signal from the transmitter seems to have been boosted.来自发射器的信号似乎已经增强。
    see also time signal
    Extra Examples
    • It is possible to jam GPS signals in battle.在作战时对全球定位系统的信号进行干扰是可能的。
    • The digital signal travels down wires to the server.数字信号沿着线路传到服务器。
    • The signal is scrambled into code before it is sent.发送信号之前要先扰码，把它变成密码。
    • This equipment can detect very low frequency signals.这种设备能够探测甚低频信号。
    • a faint signal from the satellite卫星发出的微弱信号
    Topics TV, radio and newsb2
    Oxford Collocations Dictionaryadjective
    • faint
    • weak
    • strong
    • …
    verb + signal
    • carry
    • pass
    • relay
    • …
    signal + verb
    • travel
    • fade
    signal + noun
    • intensity
    • strength
    preposition
    • signal from
    • signal to
    See full entry
  4.  
     an event, an action, a fact, etc. that shows that something exists or is likely to happen标志；预示；信号 synonym indication
    • signal (that)… The rise in inflation is a clear signal that the government's policies are not working.通货膨胀率的上升清楚地表明，政府的政策不起作用。
    • The court has given a strong signal that it disagrees with the government's position.法院已发出强烈信号，表示不同意政府的立场。
    • signal of something Chest pains can be a warning signal of heart problems.胸部疼痛可能是心脏病的先兆。
    • Reducing prison sentences would send the wrong signals to criminals.减刑会向犯罪分子发出错误的信号。
    Synonyms signsign
    • indication
    • symptom
    • symbol
    • indicator
    • signal
    These are all words for an event, an action or a fact that shows that something exists, is happening or may happen in the future.
    • sign an event, an action or a fact that shows that something exists, is happening or may happen in the future:
      • Headaches may be a sign of stress.头痛可能是紧张的迹象。
    • indication (rather formal) a remark or sign that shows that something is happening or what somebody is thinking or feeling:指标示、象征：
      • They gave no indication as to how the work should be done.他们根本没说明这项工作该怎样做。
    sign or indication?用 sign 还是 indication？An indication often comes in the form of something that somebody says; a sign is usually something that happens or something that somebody does.
    • symptom a change in your body or mind that shows that you are not healthy; a sign that something exists, especially something bad:
      • Symptoms include a sore throat.症状包括嗓子疼。
      • The rise in inflation was just one symptom of the poor state of the economy.通胀上升不过是经济不景气的一个征候。
    • symbol a person, an object or an event that represents a more general quality or situation:
      • The dove is a universal symbol of peace.鸽子普遍象征着和平。
    • indicator (rather formal) a sign that shows you what something is like or how a situation is changing:指指示信号、标志、迹象：
      • the economic indicators经济指标
    • signal an event, an action or a fact that shows that something exists, is happening or may happen in the future:
      • Chest pains can be a warning signal of heart problems.胸部疼痛可能是心脏病的报警信号。
    sign or signal?用 sign 还是 signal？Signal is often used to talk about an event, action or fact that suggests to somebody that they should do something. Sign is not usually used in this way: Reducing prison sentences would send the wrong signs to criminals. Patterns
    • a(n) sign/​indication/​symptom/​symbol/​indicator/​signal of something
    • a(n) sign/​indication/​symptom/​indicator/​signal that…
    • a clear sign/​indication/​symptom/​symbol/​indicator/​signal
    • an obvious sign/​indication/​symptom/​symbol/​indicator
    • an early sign/​indication/​symptom/​indicator/​signal
    • an outward sign/​indication/​symbol
    • to give a(n) sign/​indication/​signal
    Extra Examples
    • Interviewers quickly learn to pick up non-verbal signals.采访者很快学会读懂非语言信号。
    • The remark was interpreted as a signal that their government was ready to return to the peace talks.该言论被视作政府准备重回和平谈判的信号。
    • Try to read the signals coming from the patient.要尽量读懂病人发出的信号。
    • the signals that can indicate danger可能预示危险的信号
    Oxford Collocations Dictionaryadjective
    • clear
    • unmistakable
    • agreed
    • …
    verb + signal
    • give (somebody)
    • make
    • send
    • …
    signal + verb
    • come from something
    • indicate something
    preposition
    • at a signal
    • on a signal
    • signal for
    • …
    See full entry
    5. Word Originnoun late Middle English: from Old French, from medieval Latin signale, neuter of late Latin signalis, from Latin signum ‘mark, token’. The verb dates from the early 19th cent.

signal

verb
 
/ˈsɪɡnəl/
/ˈsɪɡnəl/
Verb Forms
present simple I / you / we / they signal
/ˈsɪɡnəl/
/ˈsɪɡnəl/
he / she / it signals
/ˈsɪɡnəlz/
/ˈsɪɡnəlz/
past simple signalled
/ˈsɪɡnəld/
/ˈsɪɡnəld/
past participle signalled
/ˈsɪɡnəld/
/ˈsɪɡnəld/
(US English) past simple signaled
/ˈsɪɡnəld/
/ˈsɪɡnəld/
(US English) past participle signaled
/ˈsɪɡnəld/
/ˈsɪɡnəld/
-ing form signalling
/ˈsɪɡnəlɪŋ/
/ˈsɪɡnəlɪŋ/
(US English) -ing form signaling
/ˈsɪɡnəlɪŋ/
/ˈsɪɡnəlɪŋ/
jump to other results
  1.  
     [intransitive, transitive] to make a movement or sound to give somebody a message, an order, etc.发信号；发暗号；示意
    • Don't fire until I signal.等我发出信号后再开枪。
    • signal to somebody She signalled to the man, who immediately came over to her.她向那个男人示意，那个男人立刻走到了她身边。
    • signal for something A woman was leaning out a top-floor window, signaling for help.一名妇女正斜倚在顶层的窗户上，示意要寻求帮助。
    • signal to somebody for something He signalled to the waiter for the bill.他示意服务员结账。
    • signal to/for somebody to do something He signalled to us to join him.他示意要我们去他那儿。
    • The patrolman signalled for her to stop.巡逻员示意她停下来。
    • signal somebody to do something She signalled him to follow.她示意他跟她走。
    • signal something The referee signalled a foul.裁判鸣哨示意犯规。
    • signal (that)… She signalled (that) it was time to leave.她示意该走了。
    • signal which, what, etc… You must signal which way you are going to turn.你要朝哪个方向转，必须发出信号。
    Extra Examples
    • I saw her signal frantically to us.我看见她疯了似的朝我们打手势。
    • Many animals use their tails to signal.许多动物都用尾巴发信号。
    • When I'm ready I'll signal with a flashlight.准备好后，我会用手电信号。
    Oxford Collocations Dictionaryadverb
    • frantically
    preposition
    • for
    • to
    See full entry
  2. [intransitive, transitive] to show that your vehicle is going to change direction, by using lights or your arm 信号；暗号synonym indicate (8)
    • Did you signal before you turned right?右转弯前你示意了吗？
    • signal something to signal left/right向左/向右发信号
    • signal (that)… I signalled that I was going to turn left.我暗示我要左转。
  3. [transitive] signal something to be a sign that something exists or is likely to happen标志；表明；预示 synonym indicate
    • This announcement signalled a clear change of policy.这个声明显示政策有明显的改变。
    • The scandal surely signals the end of his political career.毫无疑问，这桩丑闻预示他的政治生涯就此结束。
    • These events appeared to signal the end of an era.这些事件似乎预示着一个时代的结束。
    • These changes clearly signal the end of the welfare state as we know it.这些变化清楚地标志着我们熟悉的福利国家的终结。
    • A fall in demand does not necessarily signal the death of the industry.需求的减少并不一定意味着该行业走向穷途末路。
    Oxford Collocations Dictionaryadverb
    • clearly
    • effectively
    • not necessarily
    • …
    verb + signal
    • appear to
    • seem to
    • try to
    • …
    See full entry
  4. [transitive] to do something to make your feelings or opinions known表达；表示；显示
    • signal something He signalled his discontent by refusing to vote.他拒绝投票以示不满。
    • signal (that)… She has signalled (that) she is willing to stand as a candidate.她表示愿意作为候选人参加竞选。
    Topics Opinion and argumentc2
    More Like This Consonant-doubling verbsConsonant-doubling verbs
    5. Word Originverb late Middle English: from Old French, from medieval Latin signale, neuter of late Latin signalis, from Latin signum ‘mark, token’. The verb dates from the early 19th cent.

signal

adjective
/ˈsɪɡnəl/
/ˈsɪɡnəl/
[only before noun] (formal)
jump to other results
  1. important, clear and definite重大的；显要的
    • a signal honour极大的荣誉
    • a signal failure of leadership领导力失败的信号
    Word Originadjective early 17th cent.: from French signalé, from the Italian past participle segnalato ‘distinguished, made illustrious’, from segnale ‘a signal’.
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
signalsignalD.J.:[ˈsiɡnəl]K.K.:[ˈsɪɡnəl]n.1.■信号, 暗号Signals are made with flags or lamps.用旗或灯传递信号。2.■(无线电或电视所传送的)讯号, 讯息, 图像We live too far from the city to get a strong television signal.我们住的地方离城里太远, 不能收到清晰的电视图像。vt. & vi.1.■发信号; 用信号传达; 用信号通讯She is signaling.她正在发送信号。The submarine signaled for help.潜水艇发出求救的信号。She signaled the advance.她发出信号前进。She signaled that he was about to turn left.她打手势表示他就要转到左面去了。They signaled which way one is going to turn.他们打信号示意走哪一条路。He signaled a message to his brother.他用信号向他哥哥发信息。He signaled the waiter to bring the menu.他作手势要侍者拿菜单来。The conductor signaled the orchestra to rise.指挥打手势让乐队起立。Tom signaled his friend which way to go.汤姆示意他的朋友走哪条路。adj.1.■明显的, (非常)显著的, 非凡的This is a signal failure.这是明显的失败。People speak of Mark Twain as a signal humourous writer.人们称马克·吐温为杰出的幽默作家。
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
signal noun | verb | adjective
 1 
sig·nal / 5sIgnl ; 5sIgnEl /noun C
1. a sound or action that you make in order to give information to someone or tell them to do something信号; 暗号:
signal (for sb) to do sth
•When she got up from the table, it was obviously the signal for us to leave.她从桌边站起来，这显然是要我们离开。
•The headmaster gave the signal to begin.校长示意开始。
•At a prearranged signal the lights went out.预定的信号一发出，灯就全灭了。
⇒SMOKE SIGNAL
2. an event or action that shows what someone feels, what exists, or what is likely to happen信号; 标志; 预示:
signal (that)
•These results are a signal that the child may need special help.这些结果表明这个孩子可能需要特殊的帮助。
[+ of ]
•The opinion poll is a clear signal of people's dissatisfaction with the government.此次民意调查清楚地表明了民众对政府的不满。
•The display flashed a red warning signal .显示器闪了一下红色的警示信号。
•A red flag is often used as a danger signal.红色旗帜常常用作危险信号。
send / give a signal
•This will send the wrong signal to potential investors.这会给潜在投资者发出错误的信号。
3. a series of light waves, sound waves etc that carry an image, sound, or message, for example in radio or television〔无线电、电视等的〕讯号，信号:
send (out) / transmit / emit a signal (to sb)
•This new pay-TV channel sends signals via satellite to cable companies.这个新的付费电视频道通过卫星把讯号发送到有线电视公司。
•In the 1970s it was illegal to transmit fax signals via the public telephone system.20 世纪 70 年代用公共电话系统发送传真讯号是违法的。
receive / pick up / detect a signal
•a small antenna which receives radio signals接收无线电讯号的小型天线
•The Coast Guard picked up a distress signal from a freighter 50 miles out at sea.海岸警卫队接收到一艘离海岸 50 英里的货船发来的求救讯号。
4. a piece of equipment with coloured lights, used on a railway to tell train drivers whether they can continue or must stop〔铁路的〕信号灯，指示灯:
•a stop signal停车信号灯
•a signal failure (=when these lights do not work)信号灯故障
⇒busy signal at BUSY¹ (4)
 2 
signalverb
signalled, signalling BrE, signaled, signaling AmE
1. I,Tto make a sound or action in order to give information or tell someone to do something发信号，打信号; 示意:
•She signalled, and the waiter brought the bill.她打了个手势，侍者就拿来了账单。
•The whistle signalled the end of the match.哨声吹响，示意比赛结束。
[+ at ]
•Mary signalled wildly at them, but they didn't notice.玛丽拼命向他们做手势，但他们没注意到。
[+ to ]
•The judge signaled to a police officer and the man was led away.法官向一位警察示意，于是那个人就被带走了。
[+ for ]
•He pushed his plate away and signalled for coffee.他把盘子推开，并示意要杯咖啡。
signal (to) sb to do sth
•She signalled to the children to come inside.她示意孩子们进来。
signal that
•The bell signaled that school was over.铃声响起，放学了。
2. Tto make something clear by what you say or do – used in news reports〔用语言或行动〕表明，表示〔用于新闻报道〕:
•Both sides have signaled their willingness to start negotiations.双方都表明愿意开始谈判。
•British sources last night signalled their readiness to talk.英国方面昨晚表示愿意对话。
signal (that)
•The Prime Minister's speech today signals that there will be a shake-up in the cabinet.首相今天的讲话表明内阁将进行改组。
3. Tto be a sign that something is going to happen标志着，预示:
signal the start / beginning / end of sth
•the lengthening days that signal the end of winter白天变长标志着冬天的结束
4. Ito show the direction you intend to turn in a vehicle, using the lights〔车辆转方向时〕打灯示意;SYNindicate AmE:
•Signal before you pull out.驶离路边时先要打灯示意。
 3 
signaladjective only before nounformal
1. important重要的:
signal achievement / success / failure etc
•The university has done me the signal honour of making me an Honorary Fellow.这所大学给了我极大的荣誉，授予我荣誉董事的头衔。
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078

signal
1 signal /ˈsɪgnl̟/ noun
plural signals
1 signal
/ˈsɪgnl̟/
noun
plural signals
Learner's definition of SIGNAL
[count]
1 
: an event or act which shows that something exists or that gives information about something : sign信号（事件或行为）
— often + of
2 
: something (such as a sound, a movement of part of the body, or an object) that gives information about something or that tells someone to do something信号，暗号（声音、身体动作或某物体等）
3 
: a piece of equipment with colored lights that is used on railways and roads to tell people when to go, to slow down, or to stop交通信号灯；红绿灯
4 
technical
a  : a message, sound, or image that is carried by waves of light or sound（传播信息、声音、图像等的光波或声波的）信号
b  : a wave of light or sound that carries a message, sound, or image（传播信息、声音或图像的）光波，声波

busy signal

— see 1busy

mixed signals

— see mixed
2 signal /ˈsɪgnl̟/ verb
signals US signaled or British signalled US signaling or British signalling
2 signal
/ˈsɪgnl̟/
verb
signals US signaled or British signalled US signaling or British signalling
Learner's definition of SIGNAL
1 
[+ object] : to be a sign of (something) : to show the existence of (something)标志；表明
2 
: to make a sound or motion that tells someone something发信号；示意
[no object]
[+ object]
3 signal /ˈsɪgnl̟/ adjective
3 signal
/ˈsɪgnl̟/
adjective
Learner's definition of SIGNAL
always used before a noun formal
: very important or great : significant重大的；显要的

— signally

/ˈsɪgnəli/ adverb
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
signal n 信号
sign=mark 记号,信号
signal n 信号
signalize v 通知,发信号 (signal 信号+ize)
assign v 分配,指定 (as+sign=不断给人信号=指定)
assignment n 分配,指定 (assign+ment)
signature n 签名,盖章 (sign+ature=记号的东西=签名)
signet n 印,图章 (sign+et 做记号=图章)
signify v 表示,象征 (sign+ify=用信号表示=象征)
significance n 重要,意义 (sign+ific 带有+ance=带有信号=[有]意义)
significant a 有意义的
consign v 委托,寄存 (con 共同+sign=共同做记号=把…委托[别人])
consignment n 交付,委托 (consign+ment)
design n/v 计划,设计 (de 着重+sign=着重做记号=设计)
designate v 指示,指定 (de+sign+ate=着重指定)
designation n 指定,任命 (designate+ion)
ensign n 国旗,军舰旗 (en 内+sign=内部标志=国旗)
insignia n 徽章,标识 (in 内+sign+ia=内部标志物=国徽)
resign v 辞职,放弃 (re 再+sign=再做记号=再签字=[任职签一次],辞职签一次)
resignation n 辞职,听天由命
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078

See also: 信号

高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078
高考 CET-4 CET-6 考研 IELTS GRE BNC: 1960 COCA: 2078

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