Three-second violation: an offensive player may not stand in the lane for three seconds.

三秒违例(three - second violation)：进攻球员在通道内不允许停留三秒。

youdao

In one of Bem's studies, 100 college students were shown a list of 48 common nouns flashed on a computer, one at a time, for three seconds each.

在本的一项试验中，100名大学生坐在电脑前，48个常见名词一个一个地展现在电脑屏幕上，每个用时三秒种。

youdao

It says that goldfish can only remember things for three seconds.

书上写着金鱼的记忆力只有三秒钟。

youdao

Do not think of a pink elephant for the next three seconds ? and I am sure no one thought of a pink elephant right?

在接下来的十秒钟里不要想粉色大象,我肯定没有人想一头粉色大象，是吗？

哈佛公开课 - 幸福课课程节选

During the flight, father-of-two Mr Connery dropped for three seconds before his suit "started to fly".

BBC: Gary Connery in world's first skydive without parachute

Under Ofcom regulations, broadcasters must inform viewers by displaying the letter 'P' for three seconds at the start and end of a programme that contains product placement.

BBC: Product placement ban on British TV lifted

Maybe I'd like a billion for three seconds, or 10 billion, just the way I might need a million computers in the cloud for two seconds and can access them through Google.

WSJ: The Weekend Interview: Will Google's Ray Kurzweil Live Forever?