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单词 zero hour
释义 zero hour
noun
1.
 a. : the hour at which a previously planned attack or other military operation is started — compare h hour
 b. : the scheduled time for an action or operation (as the firing of a rocket) to occur or begin — compare countdown
2. : a time when a vital decision or decisive change in the course of events is impending : crisis
3. : the time set as a basis for reckoning the time of day
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更新时间:2024/11/13 11:02:47