countdown
🇺🇸
/ˈkaʊntdaʊn/
🇬🇧
/ˈkaʊntdaʊn/
counting numbers backwards to zero, like before a rocket launch
The countdown for the rocket launch started at ten seconds.
火箭發射的倒數計時從十秒開始。
the time just before something big happens
The countdown to the concert made everyone excited.
音樂會倒數計時讓每個人都興奮不已。