"They don't mutate,and the reason they don't mutate is that if they try to, the virus can't survive if you have mutations in these sites."

VOA: standard.2010.07.21

If you can feel the force of that thought, then you're seeing how the question Will I survive?

如果你能感觉到这想法的力量，那你就能明白我是否依然生存这个问题？

耶鲁公开课 - 死亡课程节选

It's easy to see how you might think, how you might worry about the badness of death, if you thought you would survive your death.

如果你认为经历过死亡依然能存活，你会怎么想象和担心死亡的坏处，就很容易看出来了。

耶鲁公开课 - 死亡课程节选

Well, first of all, you may not survive for long, if you truly don't accept the fact that things, people being no exception fall when left in mid-air.

首先，你可能活不长，如果你不接受，人会从半空中掉下来的事实。

哈佛公开课 - 幸福课课程节选

And if you all survive this exercise you'll be better for it.

如果看到对比后，还能够挺过来,说明你离坚强又近了一步。

耶鲁公开课 - 心理学导论课程节选

If you have a brain, and a body, and a metabolism that wants calories, it wants fat, it wants sugar, it wants a broad variety of food so you can survive, that would be good if you lived in certain parts of the world today.

如果你有大脑,有身体,有新陈代谢,这些都需要能量,就需要脂肪,需要糖,需要极其多样食物,你才能活下来,世界上只有部分地区可以保证这些

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You can add something else to the answer without invalidating it, and that is anything with one power of t in it, because if you take one derivative it'll survive, but if you take two derivatives, it'll get wiped out.

你可以往答案后面加上其它东西,而且不影响结果,也就是任何t的一次项,因为你求一次导数之后它还在,但如果你求两次导数,这一项就不存在了

耶鲁公开课 - 基础物理课程节选

But even if you do survive-- let's the ground floor-- even if you do survive, you would lead a life of constant frustration-- refusing to accept something that is there whether you like it or not.

即使你幸存下来-,比如你在一楼-,就算你真得幸存下来，你的生活将是处处受挫-,拒绝接受现实事物,不论你喜欢与否。

哈佛公开课 - 幸福课课程节选