这个区域不是垂直简单的,因为在中间这里，不仅有顶面有底面，我还有中间面。

Then, that's not vertically simple because here in the middle, I have not only does top in this bottom, but I have this middle face.

youdao

那面旗子是红色的，中间有一个白色的大圆圈。

The flag was red, with a large white circle in the centre.

《柯林斯英汉双解大词典》

走在最后一批离开的人中间，A弯着背，面露苦涩，心里反思，加班和白发是事业有成带来的惩罚。

Among the last to leave, a reflects, with bowed shoulders and a wry smile, that late hours, like grey hairs, are among the penalties of success.

youdao

So even though we see a nodal plane down the center, I just want to really point out that it's only when we have a nodal plane in the internuclear or the bond axis that we're calling that a pi orbital.

虽然在中间有个节面，我想要指出的是,只有节面在核间轴,或者键轴上时,我们才叫它π轨道。

麻省理工公开课 - 化学原理课程节选

So instead, these would be canceling out wave functions between the two, so we would end up with a nodal plane down the center.

相反，两者之间的,波函数会相互抵消，所以我们在中间会得到一个节面。

麻省理工公开课 - 化学原理课程节选

pxa So what happens when we add a 2 p a and we subtract from it a 2 p x b, or the same with a 2 p y a subtracting a 2 p y b, is that we're actually going to cancel out the wave function in the center, so we now have 2 nodal planes.

当我们用,减去2pxb时，或者是2pya减去2pyb时，我们会消去,中间的波函数，所以现在我们有两个节面。

麻省理工公开课 - 化学原理课程节选