But it is not necessary for me to praise my superior.

VOA: special.2010.01.24

It is necessary, he says, for the prince to know well how to use the beast and the man, he writes.

他说，君主有必要清楚的知道,怎样去利用禽兽和人类。

耶鲁公开课 - 政治哲学导论课程节选

Is it because necessary conditions for this high ? growth rate just aren't there in India?

是因为印度并没有促进其经济,高速发展的必须因素吗？

普林斯顿公开课 - 国际座谈会课程节选

This he says,is necessary, and recalls that special housing was built for this brigade, where it can continue to serve.

VOA: standard.2009.04.16

For him, and I quote him, "Fortune is a woman and it is necessary to hold her down and beat her, and fight with her."

他认为,"命运就是女人,必须控制并将她打倒在地,与其斗争"

耶鲁公开课 - 古希腊历史简介课程节选

If that is what it takes to bring JAL back, he must convince employees that it is a necessary step for the company's future success.

VOA: standard.2010.02.01

How is it that some people came to acquire this capacity for rational self-control that is necessary for freedom ? and others seem to lack it?

为何有些人,会拥有这种理性自控的能力,那也是自由的必备条件,但有些人却似乎不具备这种能力？

耶鲁公开课 - 政治哲学导论课程节选

It is a claim already, and as you've seen in Aristotle, towards the end of the history of the free polis, it is something necessary for mankind.

如你在亚里斯多德那里看到那样,在临近自由城邦历史的末期,这已经成为了一种宣言,这对人类来说是不可或缺的

耶鲁公开课 - 古希腊历史简介课程节选