All actions aim at preservation or change, at making something better or preventing it from becoming worse.

所有行动都是为了维持或者改变，为了让事物变得更美好,为了不让它变得糟糕。

耶鲁公开课 - 政治哲学导论课程节选

Good, so we assumed, we kind of jumped to just one election and at least in the American system, for better or for worse, I could voice an opinion on that there are lots of little elections on the way.

好,让我们假设,我们把思维跳跃到某一次选举中,至少在美国社会里,无论正误,我都有权发表自己的言论,现在正有很多初选进行中

耶鲁公开课 - 博弈论课程节选

And, to get a pass as a freshman, you have to be performing at C level or better.

而且，新生要通过，是要得到C或者更好。

麻省理工公开课 - 固态化学导论课程节选