Now, if I get over here, HF, I know that fluorine is hogging the electron, so it is not equal sharing. It is over here.

那我们再看到这里，氟化氢，我知道氟在拉电子，所以它就不是平均共价。

麻省理工公开课 - 固态化学导论课程节选

So, as I put it, in fact I think I put it this way on the syllabus, participation--and here I mean respectful participation, not hogging the limelight... participation can improve your grade, but it won't lower your grade.

所以，像我这么陈述的，事实上，我想我用这种方式在课程表上，参与，在这里我是指尊重的参与，而不是想出风头的那种。,参与能够加分，而不会使你的分数变少。

耶鲁公开课 - 死亡课程节选