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失效

shī xiào
HSK 3.0 Level 7 Verb Uncommon

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Definitions

  1. 1. to fail
  2. 2. to lose effectiveness

Usage notes

Collocations

常与‘过期’连用,如‘过期失效’,但‘失效’本身即可表达因时间而无效。

Common mistakes

‘失效’表示原本有效的东西变得无效,不用于描述未达到预期结果(此时用‘失败’)。例如不能说‘考试失效’。

Example Sentences

1 shown
这张优惠券已经 失效 了。
This coupon has already expired.

AI-generated examples are marked with this icon.