Definition
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while
While is a conjunction used to indicate that two things are happening at the same time.
而是一个连词,用来表示两件事情同时发生。
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I like to listen to music while I cook dinner.
我喜欢在做晚餐的时候听音乐。
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She studied for her exam while her friends went out to play.
她在朋友们出去玩的时候复习了考试。
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You can read a book while you wait for the bus.
你可以在等公交车的时候看书。