So we have four variables, two constraints.

那么我们有四个变量，两个约束条件。

youdao

In our case we have four adapters per server and we only use three.

本例中，每台服务器有四个适配器，但我们仅仅使用三个。

youdao

So we can think about now doing bonding, and now we have four equal orbitals with one electronic each.

我们现在可以考虑成键了，现在我们有4个等价的轨道，每个上面有1个电子。

youdao

We have four thousand accredited colleges and universities.

VOA: special.2010.11.18

So we can think about now doing bonding, and now we have four equal orbitals with one electronic each.

我们现在可以考虑成键了，现在我们有4个等价的轨道，每个上面有1个电子。

麻省理工公开课 - 化学原理课程节选

So we can have four total hydrogens bonding here, - and we can think about how to describe these carbon- carbon bonds.

我们这里一共有四个氢原子成键，我们可以考虑怎么来-,描述碳碳键。

麻省理工公开课 - 化学原理课程节选

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