为了活下去，动物必须吃东西。

Animals must eat to live.

youdao

我们是为了活下去而吃饭的。

We eat that we may live.

youdao

为了活下去，我将你锻造得像一件武器。

To survive myself I forged you like a weapon.

youdao

I'm talking about trying to prevent suffering and prompt for people who don't want to going on living themselves or in the case of babies allowing parents to make that judgment for themselves and their family.

我所做的是为了防止痛苦,或是帮助那些不愿,活下去的人们,或是让上述例子中的孩子的父母,能够作出决定，为他们自己，也为这个家庭。

普林斯顿公开课 - 人性课程节选

We've extrapolated that people have property rights and so whether or not it would be a good thing or a nice thing or even a necessary thing for the survival of some people, we don't see that that justifies the violation of the right that we've logically extrapolated.

我们已经推出人们有财产权,所以，就算是为了做好事，做善事,甚至是为了让某些人活下去而必须做的事，那也是不能证明，侵犯这些推定的权利,就是正当的。

耶鲁公开课 - 公正课程节选