这听起来可能很奇怪，但事实是在大爆炸的那一刻，物质和反物质都是在很短的时间内被创造出来的，我的意思是只有几分之一秒。

That may sound odd, but the fact is at the moment of the Big Bang, both matter and anti-matter were created for a short time, and I mean just a fraction of a second.

youdao

1微秒就是一百万分之一秒。

A microsecond is a millionth of a second.

youdao

1纳秒为十亿分之一秒。

A nanosecond is one-billionth of a second.

youdao

So, why should a non-frightening incongruity cause people to make a distinctive loud noise consisted of staccato segments of one fifteenth of a second each separated by a fifth of a second?

为什么不引起恐惧的不一致性,会让人们发出一种与别不同的声音,而且这种声音是间断的，一节声音持续15分之一秒,两节声音之间也是相隔15分之一秒？

耶鲁公开课 - 心理学导论课程节选

Now, the nanosecond is what, 10 to the minus 9 seconds.

一纳秒就是10的9次方分之一秒，而这个电脑一秒可以做2G次运算。

麻省理工公开课 - 计算机科学及编程导论课程节选