We know that ionization energy is going to increase as we go across the periodic table, so that means carbon has a lower ionization energy than nitrogen which is right next to us.

我们知道电离能会随着周期表,向右而逐渐变大，因此碳的电离能比旁边的氮要低一些,那么就像我说的。

麻省理工公开课 - 化学原理课程节选

I also think that if you were to go a little bit lower than that in terms of like...

我还想，如果你想要比它稍微档次低点儿的，比如……

喜欢的设计师 - SpeakingMax英语口语达人

So it's going to be favorable for the electrons instead to go to that lower energy state and be within the molecular orbital.

所以对于电子来说,更倾向于能量更低的轨道,呆在分子轨道里。

麻省理工公开课 - 化学原理课程节选

Well it could go twenty basis points lower but interest rates can never be negative.

呃，它可以再跌二十个基本点,但是利率永远不能是负值。

耶鲁公开课 - 金融市场课程节选

We start at this lower energy state and go up that means we need to absorb a photon, we have to take in energy.

我们从一个低能级开始，到一个高能级去,这意味着需要吸收一个光子，我们要获得能量。

麻省理工公开课 - 化学原理课程节选