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1.play back 回放
例句：Ted might benefit from hearing his own voice recorded and played back.
特德也许能从听到自己声音的录音回放中受益。
2.belong to 属于
例句：They belong to the Knights of Columbus.
他们是哥伦布骑士会的成员。
3.cast light on 使……的真相大白
例句：Franklin's experiment cast light on the connection between lightning and electricity.
富兰克林的实验使人明白了闪电与电之间的关系。
4.scare off 吓跑
例句：I don't think that revealing your past to your boyfriend scared him off.
我并不认为是因为你把自己的过去告诉了你的男朋友才把他吓跑的。
