| 单词 | countdown |
| 释义 | countdown /kownt"down'/, n. 1. the backward counting in fixed time units from the initiation of a project, as a rocket launching, with the moment of firing designated as zero. 2. the final preparations made during this period. 3. a period of increasing activity, tension, or anxiety, as before a deadline. [1950-55, Amer.; n. use of v. phrase count down] |
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