Now take these two fingers-- the middle finger and the thumb-- and as much as possible, from that 90 degree angle, create a circle.

再让这两个手指-,中指和姆指-,尽可能保持直角时围成一个圆圈。

哈佛公开课 - 幸福课课程节选

Like this. As much as possible.

像这样，尽可能围成一个圆圈。

哈佛公开课 - 幸福课课程节选

That's why in the earlier models of the atom, they're not horrible to sometimes think about just each n value as a little ring around.

这就是为什么在早期原子模型中，人们没有感觉到把每一个，n，都想象成,一个绕核的小圆圈有什么不妥。

麻省理工公开课 - 化学原理课程节选

Create a circle.

围成一个圆圈。

哈佛公开课 - 幸福课课程节选