But I do not believe that, objectives of crusaders were purely religious. I understand that , there were many many factors that pushed this campaign into the near east.

不过我不认为，十字军的目的是,完全宗教的，我觉得，有很多因素在背后推动,这个运动走向东方。

普林斯顿公开课 - 人性课程节选

One of the purposes of cell culture is to make many, many more cells under controlled conditions where I can understand what those cells are.

细胞培养的一个目的就是,在可控的环境下生成许许多多的细胞,从而让我能够研究这些细胞

耶鲁公开课 - 生物医学工程探索课程节选

Although I don't quite understand--I should say, there's many things about how the fighting went on which we can only attempt to imagine because we just don't have films of ancient hoplite battles, I'm sorry to say.

虽然我有时也很困惑,比如说,战场上瞬息万变,情况非常复杂,由于没有古代重步兵白刃战的影像资料,我们只能猜想战场上发生了什么,真的是很遗憾

耶鲁公开课 - 古希腊历史简介课程节选

The final and the fifth premise is an important one; is a philosophical one but one I want to introduce at the beginning of the course so that you understand where I am coming from, where this course is coming from-- because many people say, "Ok, so happiness is important.

最后也是第五个前提很重要;,是一个哲学前提,但我想在课程开始时介绍,你们好理解我讲课的起源，这门课程的来源-,因为很多人说，好的，快乐是重要的。

哈佛公开课 - 幸福课课程节选