You can think, " look, "the average lifespan in the United States " is whatever it is, 82 years.

你可以说，“美国人的平均寿命,“是82岁。

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Well, we might say, let's look at it from two basic perspectives, those who get less than the average lifespan and those who get more than the average lifespan.

我们可能会说，我们从两个基本角度来看，即那些活得比平均寿命短的,还有那些活得比平均寿命长的。

耶鲁公开课 - 死亡课程节选