Actually, let me start by saying I'm going to distinguish two broad families of characteristics we might appeal to.

我首先来,区分一下两个不同种类的特征,我们也许会用到它们

耶鲁公开课 - 死亡课程节选

You kind of wonder, how can it be that people had such different views depending on which city they lived in?

也许你会纳闷,不同城市的居民怎么会,对这个问题的看法如此迥异

耶鲁公开课 - 金融市场课程节选

For the coming week, I would like you to please pay particular attention: we're dealing with two topics that will be, I think perhaps for some of you, a little different, new, alien.

下星期，我希望大家特别注意：,我们将要探讨的两个主题，我想，你们当中的有些人也许会觉得新奇，不同。

耶鲁公开课 - 旧约导论课程节选

The size of the cells could be different; maybe mitosis is asymmetrical in some way so that one of the cells ends up being bigger than the other.

细胞大小可能会不同,也许有丝分裂的过程是不对称的,致使子细胞一个大一个小

耶鲁公开课 - 生物医学工程探索课程节选