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历史:
CET-4 CET-6 BNC: 2645 COCA: 2456
observerobserverD.J.:[əbˈzə:və]K.K.:[əbˈzɚvɚ]n.1.观察者, 观察员; 遵守者The old man was sent along as an observer.那个老人被派作观察员。

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