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高考 CET-4 CET-6 考研 IELTS BNC: 1105 COCA: 814
sex noun | verb
 1 
sex / sZks ; seks /noun
1. Uthe physical activity that two people do together in order to produce babies, or for pleasure性活动,性行为:
All you see on TV is sex and violence these days.如今的电视上充斥着性和暴力。
They had sex in the back seat of his car.他们在他的汽车后座上做了爱。
She no longer wanted to have sex with him.她不想再和他做爱了。
premarital sex / sex before marriage ( = sex happening before marriage )婚前性行为
the dangers of casual sex (=having sex with someone without intending to have a serious relationship)性关系随便的危险性
safe sex ( = ways of having sex that reduce the spread of sexual diseases )安全性交
unprotected sex ( = sex without a CONDOM )无保护的性行为
2. Uwhether a person, plant, or animal is male or female〔人、植物、动物的〕性别:
Put your name and sex at the top of the form.在表格的上端填上你的姓名和性别。
3. Call men, considered as a group, or all women, considered as a group男性; 女性; 雄性; 雌性:
He found it difficult to talk to members of the opposite sex (=people that were not his own sex) .他觉得很难和异性交谈。
People of both sexes (=both men and women) buy her records.男男女女都买她的唱片。
4. single-sex school / college etc BrEa school etc for either males or females, but not for both together单一性别的学校/学院等
 2 
sexverb Ttechnical
1. to find out whether an animal is male or female鉴别〔动物的〕性别
 PHRASAL VERBS 
sex sth ↔ up
if someone sexes up a report or document, they make changes to it in order to make it say what they want it to say, even though it might not be completely true
篡改,更改〔报告或文件〕:
The Prime Minister denied that he had asked anyone to sex up the report.首相否认他指使过任何人改动这份报告。

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