countdown

US /ˈkaʊnt.daʊn/
UK /ˈkaʊnt.daʊn/
"countdown" picture
1.

倒计时

the act of counting backward to zero, typically to mark the start of an event

:
The final countdown to the rocket launch began.
火箭发射的最后倒计时开始了。
We watched the New Year's Eve countdown on TV.
我们在电视上看了新年倒计时
1.

倒计时

to count backward to zero

:
The mission control began to countdown from ten.
任务控制中心开始从十倒计时
We need to countdown the days until our vacation.
我们需要倒计时直到我们度假的日子。