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词汇 失效
释义
失效
1. lose efficacy; lose effectiveness; cease to be effective
这药已~了。 The medicine no longer has any effect.
使水雷~ deactivate mines
2. (of a treaty, an agreement, etc.) be no longer in force; become invalid
自动~ automatically cease to be in force
条约的~ voidance (or voidness) of a treaty
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