西瓜单词

countdown是什么意思

countdown

英 ['kaʊntdaʊn] 美 ['kaʊntdaʊn]

countdown (n.): 1953, American English, in early use especially of launches of rockets or missiles, from count (v.) + down.

1. There were three more things to do before countdown.

开始倒计时之前还有3件事要做。

来自柯林斯例句

2. The countdown to the Notting Hill Carnival is in its final hours.: 诺丁山狂欢节已经进入了最后几个小时的倒计时。

4. The countdown has begun for the launch later today of the American space shuttle.: 美国航天飞机的发射已于今天晚些时候开始进入倒计时。

5. If the countdown timer ever hits zero, do your validation processing.: 处理这种情况的方法是在输入的同时使用递减计时器,每次击键重新计时.如果递减计时器变为零, 就开始验证.