Some estimates suggest species extinction because of human activity is about 1,000 times faster than the natural rate of loss.

VOA: standard.2010.01.31

In comes the prehensile thumb, and the next thing you know you get a colossal earthquake, and the possessor of the prehensile thumb disappears from the earth -which is to say, very possibly the human species will never develop.

就像对人类进化至关重要的大拇指，经历了一场大地震后，如果所有有这种拇指的人都消失了,那么人类就很可能永远不能进化。

耶鲁公开课 - 文学理论导论课程节选

Aristotle's political science presupposes in other words a certain conception of human beings as linguistic animals who are capable not only of living together -so do a range of other species -but rather sharing in the arrangements of rule.

亚里士多德的政治科学,预设一种特定的概念,即人类是能言语的动物,我们不只能生活在一起,像其它很多动物一般,还能共享规范的安排。

耶鲁公开课 - 政治哲学导论课程节选