名词中文翻译
中文翻译：便衣警察
同义词：
['detective', 'undercover officer']
例句：
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1.He was a plainclothesman who helped catch the thief.
他是一名便衣警察，帮助抓住了那个小偷。
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2. The plainclothesman was able to blend in with the crowd and observe without being noticed.
这位便衣警察能够与人群融为一体，不被注意到地观察。
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3. The plainclothesman was assigned to tail the suspect at his home.
这位便衣警察被分配去跟踪嫌疑人在他的家中。