- 释义：
- n. 预防；警惕
- 例句：
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I took the precaution of locking money in the safe.
我把所有的钱都锁在保险箱里以防万一.
换一句
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He closed his eyes and composed himself with infinite precaution.
他闭上眼睛,极其小心地让自己镇静下去.
换一句
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Could he not, just as a precaution, move to a place of safety?
就算仅仅是为了以防万一，难道他就不能挪到安全的地方吗？
换一句