他住在三层（即再上去二层）楼上。

He lives up two pairs of stairs.

youdao

它就再上去问天使了。

He then departed again to ask the angels.

youdao

我想我们得再上去了。

I think we'll have to go up again.

youdao

So let's fill it out in this way, 2p keeping in mind that we're going to fill sigma out the pi 2 p's before the sigma.

让我们这样填上去，记住我们先填π,轨道再填。

麻省理工公开课 - 化学原理课程节选

So, let's have you try one more, if we can switch over and talk about a 3 d orbital.

让我们再来看一个，转到课堂题目上去,我们来看看3d轨道。

麻省理工公开课 - 化学原理课程节选