吃透英语课本，提升在校竞争力
phrase. 用坏；穿破；（使）筋疲力尽；耗尽
However, you should not wear out your brain.
不过也要避免过度用脑，
You are going to wear out the computer's keyboard.
你会把电脑键盘弄坏的。
The shoes will wear out soon.
这双鞋子很快就会磨损。
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