"There is a need to break the on-again-off-again cycle of our military-to-military relationship,".

VOA: standard.2009.10.27

Those are the sorts of things we need to break down the statistics the billion people in poverty.

我们需要用这些事例,让人们对几十亿人口,这样一个数据有具体的认识。

普林斯顿公开课 - 人性课程节选

So if I try to rotate my 2 atoms, you see that I have to break that pi bond, because they need to be lined up so that the electron density can overlap.

如果我要试着转动两个原子，你会看到我必须要打破一个π键，因为他们需要连接起来,让那些电子能够重叠。

麻省理工公开课 - 化学原理课程节选