It's a transition, an evaluation of marriage that is not at all an easy one, however. There are debates.

这是一种转变，对婚姻的评价,那并不是一个简单的转变，当时也有争论。

耶鲁公开课 - 弥尔顿课程节选

So zero is supposed to be neither positive nor negative, and here I am just simplifying and saying it's actually going to be negative.

所以0不是一个正数，也不是负数，在这里我只是简单地,说明它实际上会是负数。

哈佛公开课 - 计算机科学课程节选

That's the easy answer obviously, and of course it's not untrue.

这显然是简单的回答，也并不是不对。

耶鲁公开课 - 弥尔顿课程节选