"It may cost one or two seats to be lost in tough districts, but I think once people really find out what this bill does and how good a job he's done and the Democrats have done, I think they may very well pick up some seats."

VOA: standard.2010.03.25

One thing that I want to mention that is really important is once you have double bonds, what happens between those two atoms in the molecule is they can no longer rotate in relation to each other.

我要提醒你们的非常重要的一点事,一旦有了双键，分子中的两个原子,就不能相对旋转了。

麻省理工公开课 - 化学原理课程节选