| 单词 | 乘虚而入 |
| 释义 | 乘虚而入乘虚而入[chéng xū ér rù]1.■take advantage of a weak point; advance when the enemy's defenses are weak; enter, taking advantage of the enemy's unpreparedness; get a chance to step in; infiltrate by taking advantage of the other side's unpreparedness; act when one's opponent is off guard; break thorough at a weak point; exploit a weak point |
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