从某个方面看，你会把磁体切到如此之小，小到只有一个单原子那么大。

At some point, you will cut the magnet so small that you will have cut down to the size of a single atom.

youdao

这些噬菌体将各自包含噬菌粒文库的一个单链成员。

These phages will each contain one single-stranded member of the phagemid library.

youdao

然后就变成了一个单变量积分。

And, then I have a single variable integral.

youdao

So, let's write this one electron orbital approximation for berylium, that sounds like a pretty complicated question, but hopefully we know that it's not at all, 1s22s2 it's just 1 s 2, and then 2 s 2.

所以让我们写出,铍的单电子轨道近似，那听起来像是一个更为复杂的问题，但是希望我们知道它一点都不是，它仅仅是。

麻省理工公开课 - 化学原理课程节选

So this is the equality operator, whereas the single equal sign is the assignment operator.

所以这是相等操作符，然而那个单等号是一个赋值运算符。

哈佛公开课 - 计算机科学课程节选

And orbiting around this is a lone electron out at some distance r.

有一个单电子,在环原子核的轨道上运行。

麻省理工公开课 - 固态化学导论课程节选