这种依靠人工的将水分离成氢和氧的过程也是需要消耗能量的。

Instead it has to be manufactured by splitting water into hydrogen and oxygen, a process that consumes energy.

youdao

事实上，它需要消耗能量，我们到了一个更高的能量状态。

And the truth is that yes, this costs energy, we're going up to a higher energy state.

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大脑内，更好的神经连接也需要消耗能量，不成比例的占据大脑空间。

Better "wiring" across the brain also would consume energy and take up a disproportionate amount of space.

youdao

And in this case we're going to look at silicone, and we'll say if you can point out to me which requires the least amount of energy.

这次我们要做的是关于硅的，我们来看看大家是不是,能够为我指出那一项需要消耗的能量最少。

麻省理工公开课 - 化学原理课程节选

The electron's going to come out of that highest occupied atomic orbital, that one that's the highest in energy, because that's going to be the at least amount of energy it needs to eject something.

这个电子应该是从,最高的被占据轨道上出来的，它的能级是最高的，因为这样的话发射出它,只需要消耗最少的能量。

麻省理工公开课 - 化学原理课程节选

Alumina is really stable, which is why it takes so much energy to make aluminum.

矾土相当稳定，这就是为什么需要消耗大量的能量制备铝了。

麻省理工公开课 - 固态化学导论课程节选