然后，当发动机点火时，等待倒计时数到零。

And, as the engines ignite, wait for the countdown to reach zero.

youdao

我们已经有太多类似的呼叫（详细请看倒数到零的记录文献）。

We’ve had too many close calls already (see the documentary Countdown to Zero for details on that).

youdao

有一次他（乔丹）开场得分后数道“38”，我没懂什么意思。 然后他数道“36”……等等，他是在倒数。 当他数到零时，他已经得了40分了。

One time he started counting backwards. he said something like '38', and i didn't get it, then he said '36'…wait a minute, wait a minute, he goin' backwards and when he gets to zero, he got 40!

youdao