现在是零时所有队伍根据我的倒数开始行动。

Ok, it 's zero hour. All teams execute on my count.

youdao

时间已经开始倒数了。

Time already starts counting down.

youdao

另一组参与者在观看视频片段时必须从1000开始倒数，依次减9，这占据了他们有意识的工作记忆。

Another set of participants had to count backward from 1,000 by nines as they watched the clips, occupying their conscious working memory.

youdao