He needs to know about the structures of the molecules, because if the structure is wrong it's not going to work.

他想要让它们成键，他需要知道分子结构，因为如果结构不对。

麻省理工公开课 - 化学原理课程节选

It is not easy to say,what is the right thing,or what is the wrong thing.

我们不能简单地说,什么是对的,什么是错的

耶鲁公开课 - 古希腊历史简介课程节选

One of the reasons for thinking it's not clear whether the argument fails or not is because it's hard to pin down, where exactly did it go wrong?

并不能确定这个论证是否成立,的其中一个原因就是,我们很难确定,到底是哪里出了问题

耶鲁公开课 - 死亡课程节选

Some of us are supermen, and it is quite wrong and wicked for us to be treated as though we were ordinary fellows, and therefore do not tie us down with these ridiculous codes of ethics, and morals, and other things which are simply the weapons by which the weak hold down the strong."

有些甚至是超人,把我们都作为普通人,来对待是错的,是不道德的,所以别用荒唐的,道德伦理来束缚我们,或用武器这样粗陋的东西来约束我们,那是弱者用来压制强者的工具"

耶鲁公开课 - 古希腊历史简介课程节选