Milton had written in Areopagitica that he had actually met Galileo on his journey, when Milton was a young man and Galileo was a very old man, through the continent.

弥尔顿在中已经写到,他实际上在旅途中曾经遇到过伽利略，那还是当他是一个年轻人，而伽利略已然老去的，一次环陆旅行中。

耶鲁公开课 - 弥尔顿课程节选

Benzene is a ring that's made up of six carbon atoms and six hydrogen atoms.

苯环是一个由六个碳原子,和六个氢原子组成的环。

麻省理工公开课 - 化学原理课程节选

And orbiting around this is a lone electron out at some distance r.

有一个单电子,在环原子核的轨道上运行。

麻省理工公开课 - 固态化学导论课程节选

And theother way in the circle will never happen.

这个环中的另一个方向永远不会发生。

麻省理工公开课 - 热力学与动力学课程节选

But it was an important ambient.

这也是一个很重要的一环。

普林斯顿公开课 - 国际座谈会课程节选