I would say with the aid of an energy level diagram explain the fact that helium is found as atomic gas and not molecular. How about this one?

我要说的是，在能级图的帮助下,可以解释氦气是单原子气体,而不是分子气体这一事实,那么这个呢？

麻省理工公开课 - 固态化学导论课程节选

I want to talk a little bit about how you use the things we've been building in terms of functions to help you structure and organize your code.

第一件事情就是我要谈下,怎么利用我们,所做的能在方法方面,帮助你们组织和优化代码。

麻省理工公开课 - 计算机科学及编程导论课程节选