No one knew if they could get the spacecraft back to Earth, or if they could survive long enough to return.

VOA: special.2009.07.22

He describes for us his own power that somehow manages to survive even a terrifying and humiliating defeat like the one he's just experienced.

他向我们描述了他的力量--在经历了这样一次,可怕的令人羞辱的失败之后,他还是顽强的生存下来了。

耶鲁公开课 - 弥尔顿课程节选

And so at least the possibility that I'll survive my death is one worth taking very, very seriously if we are dualists.

因此如果我们是二元论者,那么至少我们会非常非常认真地看待,我们能幸免一死的可能性

耶鲁公开课 - 死亡课程节选

They argued in effect better that one should die so that three could survive.

辩称“牺牲一人保全三人“是更好的结果。

耶鲁公开课 - 公正课程节选

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