针筒被大批地回收，你可以在这里看到它的规模，按大小来分类，全部用手，再送囘市场上去卖，所以再回收再使用。

And they are collected en mass — you can see the scale of it here — and sorted out, by hand, back into the right sizes, and then put back out on the street.

youdao

你之前安装了什么版本，这里就会显示什么版本，所以你可能只看到一个版本被列出来，这取决于你之前安装的版本。

This will only show the version you installed previously, so you may only see one version listed depending on your selection.

youdao

所以举例来说，如果你看到这里的1s轨道，你可以看到实际上，多电子原子情况的。

So for example, if you look at the 1 s orbital here, you can see that actually it is lower in the case of the multi-electron atom than it is for the hydrogen atom.

youdao

So for example, if you look at the 1 s orbital here, you can see that actually it is lower in the case of the multi-electron atom than it is for the hydrogen atom.

所以举例来说，如果你看到这里的1s轨道,你可以看到实际上,多电子原子情况的。

麻省理工公开课 - 化学原理课程节选