I can take a heat pack, like the kind you buy at a pharmacy. Break it up. It gets hot.

买来的热装罐在里面打破,它就变热了。

麻省理工公开课 - 热力学与动力学课程节选

When it breaks this bond, that chlorine atom, a free chlorine atom comes down and reacts, this is ozone, with the ozone in the upper atmosphere.

当它打破这个化学键，氯原子，一个自由的氯原子下来,和在大气层的上方的臭氧反应，这就是臭氧，在大气上层有臭氧。

麻省理工公开课 - 固态化学导论课程节选

But if you want to reject it, you have to break in to this chain of reasoning which goes, taking my earnings is like taking my labor, but taking my labor is making me a slave.

但要想驳倒自由主义，你就得打破它的这个推理过程，强占我的收入，就是强迫劳动，强迫劳动，就是让我做奴隶。

耶鲁公开课 - 公正课程节选

So for b 2, which is a single bond, that's 289 kilojoules per mole to break it, and it takes us more energy to break this double bond for carbon, which is 599 kilojoules per mole.

对于B2，它是单键，需要289千焦每摩尔来打破它，而对于碳双键,打破它要更多的能量，等于599千焦每摩尔。

麻省理工公开课 - 化学原理课程节选