He writes home, "I do not intend to shirk now that there is really something to fight for; I mean freedom.

他在家书中道,"我不打算逃避,我必须为之一战,为自由而战

耶鲁公开课 - 美国内战与重建课程节选

I want to just go over the requirements of the course that really are required, not the optional piece, just so that you understand what my purpose is pedagogically.

我只想跟大家回顾一下,这门课程的必须要求，并非可以自由选择的,这样你们会理解我的目的何在。

耶鲁公开课 - 1945年后的美国小说课程节选

We must wonder whether the power of modern weapons will allow it and the world to survive at such a price.

我们必须质疑现代武器的力量能否,维系自由和这个世界的存在

耶鲁公开课 - 古希腊历史简介课程节选

The possibilities of freedom must always, in their view, be balanced with the world as it as--not as it ought to be.

在他们看来,自由的存在可能性,必须与现实相结合,而不是理所当然的

耶鲁公开课 - 美国内战与重建课程节选

All that glitters is not gold, but it must have free electrons.

并非所有发光的都是金子，但是要发光必须有自由电子。

麻省理工公开课 - 固态化学导论课程节选

And once we rid ourselves of the burden of historicity, we're free to appreciate the stories for what they are: powerful, powerful narratives that must be read against the literary conventions of their time, and whose truths are social, political, moral and existential.

曾经我们将自己从史实性的负担中解放出来，我们,以故事原本的样子自由地欣赏它们：强大的，强大的叙事,必须能冲破那个时代的文学惯例和社会、政治、,道德及实存的真实而被解读。

耶鲁公开课 - 旧约导论课程节选

It's got to be the case to prove that we've got a soul-- at least for this argument to work to prove that we've got a soul-- it's got to be the case that we've got free will.

必须要有事实证明我们有灵魂,至少是为了能够证明这个论证,人是有灵魂的,必须要有事实证明我们有自由意志

耶鲁公开课 - 死亡课程节选

Or freedom, they will argue, must be balanced with tradition.

他们认为自由,必须与传统相结合

耶鲁公开课 - 美国内战与重建课程节选