"And although we have green shoots and for the moment the news is good, I think we could have challenges as we get to the end of the year.

VOA: standard.2009.08.05

Well, if it is a good electron donor in an electron transfer reaction, if the same element finds itself in a covalent bond, it is going to be a good electron donor, although it is not full transfer.

如果它是一个在电子反应中,的好捐赠者，如果相同电子发现他在共价电子里，它将成为一个好的捐赠者，虽然没有完全转换。

麻省理工公开课 - 固态化学导论课程节选

Against that, I suppose, you've got pessimists-- pessimists who say, " "No, no. Although life perhaps has some good things, " the overall grand balance " is negative for everybody in every circumstance.

与之相反还有悲观主义者-,悲观主义者会说，“不，也许生活有些美好的事情，“但总体的结果,“在任何情况下对任何人都是负数。

耶鲁公开课 - 死亡课程节选

but rather, is there any good reason to think that we're all or most of us are in that situation, are in that state of belief where, although we give lip service to the claim that we're going to die, is there any good reason to believe that fundamentally we don't actually believe it?

而是是否有好的理由认为,我们中全部或者大部分都处于，这样一种相信的状态，虽然我们都声称自己会死，是否有好的理由相信,我们其实根本不相信呢？

耶鲁公开课 - 死亡课程节选