Lee says once a bully begins an attack, it causes a chain reaction.

VOA: standard.2010.03.30

That's amazing, you can get atoms to smash atoms and create a chain reaction and create power-- that's a pretty amazing invention.

很惊人，你可以利用原子去做加速粒子,并产生连锁反应，然后创造能量-,那是个十分惊人的发明。

耶鲁公开课 - 金融市场课程节选

Here's a way that you can do it in a test tube without using any cells by this process called Polymerase Chain Reaction.

但有一个方法可以让你在试管中完成,不用细胞,这个方法叫聚合酶链式反应

耶鲁公开课 - 生物医学工程探索课程节选

Lee says the Dubai debt crisis is not that large by itself, but may be enough to spark a chain reaction, especially in Europe, where many banks lent money to Dubai.

VOA: standard.2009.11.27

Even if a nuclear explosion took place and everything on earth got atomized and destroyed, through some bizzare science fiction chain reaction. They always do in the movies.

即使发生核爆炸,像某些离奇科幻小说里描述的，的连锁反应那样，一切都毁灭了,电影里经常可以看到的场面。

耶鲁公开课 - 死亡课程节选

The technique I want to talk about is one called Polymerase Chain Reaction.

我想讲的技术是聚合酶链式反应

耶鲁公开课 - 生物医学工程探索课程节选