She's already counting down to the big day.

她已经在对这一重大日子倒计时了。

《牛津词典》

Time already starts counting down.

时间已经开始倒数了。

youdao

I was five when I began counting down the years until my sister would move out.

我从五岁起，就开始倒数计时看我姐姐将何时离开家搬出去住。

youdao

I should've been counting down--35, 30, 25 and so forth.

我应该在倒计时--35年，30年，25年等等。

耶鲁公开课 - 死亡课程节选

Because I keep counting down each time around-- mostly I've got to unload this candy which is driving me nuts, so-- thank you.

因为我每次循环b减了,我一共要执行这个循环b次,所以这里我们一共执行了3b次基本操作。

麻省理工公开课 - 计算机科学及编程导论课程节选

"The opening ceremony has been CWC's traditional landmark for counting down - but we all know we must be ready long before that, " said venue development director Donald Lockerbie.

BBC: SPORT | Cricket | International Teams | West Indies | Travel warning for World Cup fans

There's already an on-screen logo counting down the days to the start on E4, which will be streaming live coverage of goings-on in the Big Brother house from 2130-2245 each evening, and again through the night - and whose ratings and share of audience rise dramatically whenever Big Brother is on.

BBC: Reality bandwagon rolls on

Start-up watchers have been counting down the launch of Airtime, the social video site being developed by Napster founders Sean Parker and Shawn Fanning.

FORBES: Sean Parker and Shawn Fanning's Airtime Scores Another All Star Backer