They want to get as far away from each other possible, the ideal angle is 120. But what we have here is a four-membered ring, so what angle does 90° that have to be, that bond? 90 degrees.

它们想要尽量远离彼此，最理想的是形成120°键角,但现在是个四元环,所以这键角应该多大？

麻省理工公开课 - 化学原理课程节选

But if meaning and significance bleed into each other, what I'm going to be doing is establishing a canon, as it were, unconsciously or semiconsciously.

但是意思和意义难以分清，我则会树立起一个顺其自然的标准，无意识地或者是半意识地。

耶鲁公开课 - 文学理论导论课程节选

So you're marching forward at that pace, but now as you get closer and closer to each other, various items begin to affect your behavior.

所以大家步调一致地突进,但当你越来越接近对方时,各种事物开始影响你的行为

耶鲁公开课 - 古希腊历史简介课程节选