Last December in Copenhagen, the international community took a first step towards making society pay for the services provided by nature for free.

VOA: standard.2010.02.24

So, the first half of the class is going to be concerned with questions about the nature of death.

所以，课程的前半部分将会集中在,死亡本质的问题上。

耶鲁公开课 - 死亡课程节选

First there is the comparatively lowly kind which turns for support to the simple emotions and is of a definitely personal nature.

首先是相对低端的一种,只是支撑起简单的情感,这是一种明确的人类本性。

耶鲁公开课 - 1945年后的美国小说课程节选

The first and most fundamental law of nature, he says, is to seek peace and follow it.

第一条也是最根本的的一条自然法就是，去寻求和平并且沿袭下去。

耶鲁公开课 - 政治哲学导论课程节选

Now, the first such argument I dub "The argument from the nature of the forms."

我给第一个论证起的名字是,"型相本质论"

耶鲁公开课 - 死亡课程节选

And all we can do after we accept this nature is to first understand it through research, and then after we understand it, make the best use of it.

在接受这个本性后，我们唯一能做的,是通过研究首先来理解它，理解它后，好好地利用它。

哈佛公开课 - 幸福课课程节选

That's the first basic view about the nature of a person.

这是关于人本质的第一个基本观念

耶鲁公开课 - 死亡课程节选