If I rotate this faster than in two seconds when the bucket is upside-down if physics works, the water should not fall out.

如果我旋转的速度比桶倒过来的两秒钟还快，要是物理原理成立，水就不会掉出来。

youdao

If not, do another 20 seconds after you've taken a break and wiped the hard-earned sweat off your brow.

如果不行，那就休息一段时间，擦擦汗水，再重复一次20秒。

youdao

If not, wait a few seconds or refresh the status by clicking on the refresh icon on the status column.

如果不是，请等待数秒，或单击Status列上的刷新图标进行刷新。

youdao

The one thing you want to keep in mind though is that Hertz does not actually mean inverse seconds, it means cycles per second. So, if you're talking about a car going so many meters per second, you can't say it's going meter Hertz, you have to say meters per second.

写成5每秒，或5赫兹,你们要记住的是赫兹,并不等于秒的倒数，它是每秒的循环数，如果你们说,一辆车一秒可以走多少米,你不能说它走了米赫兹。

麻省理工公开课 - 化学原理课程节选

"You're losing at least two or three seconds, if not more than that, " said Roper, who started as a 911 operator in 1989.

WSJ: Glitches in new NYC 911 system

If you do not have them, you need around 20 seconds.

BBC: Sharp-eyed Pleiades returns first pictures

If such a thing only takes 30 seconds, why not?

FORBES: So What Kind Of Person Are You? The Machines Know.