Of course now I have visited projects and groups helping the poor and seen what they were doing.

当然，现在我已经亲历了许多组织,帮助贫困人口的过程，也看到了他们的工作。

普林斯顿公开课 - 人性课程节选

What the Dutch did--the Netherlands is an extraordinarily small country, and it's the most populated country in Europe, then, per square kilometre, and is now--once.

那些荷兰人...荷兰是一个,非常非常小的国家,也是当时欧洲人口密度最高的国家,如果以每平方公里人口计算,现在也是

耶鲁公开课 - 欧洲文明课程节选

If the rate of growth had sustained, that's what the population would've been.

假如高增长率持续的话,我们现在得有多少人口啊

耶鲁公开课 - 美国内战与重建课程节选