So, what I'm showing in this picture here is just an electron cloud that you can see.

你们可以看到我现在展示的这张图是，一个电子云。

youdao

The atom at the tip of the chain emitted electrons onto a surrounding phosphor screen, rendering an image of the electron cloud around the nucleus.

碳链末端的原子发射电子到周围的磷光屏，得到原子核周围电子云的图像。

youdao

So, what I'm showing in this picture here is just an electron cloud that you can see.

你们可以看到我现在展示的这张图是,一个电子云。

麻省理工公开课 - 化学原理课程节选