Alright, so let's now start doing more interesting things hello than just saying hello ad nauseam to ourselves.

也行，好吧，那我们接着上课，讲些更有趣的东西,不再一遍又一遍重复令人作呕的。

哈佛公开课 - 计算机科学课程节选

But now, when more and more countries start doing it, maybe it won't work so well.

但是现在,随着越来越多的国家开始效仿,人们会发现也许这些制度并不完全有效

耶鲁公开课 - 金融市场课程节选

Now, once we've got that, we can start doing things.

好，我们可以开始做了。

麻省理工公开课 - 计算机科学及编程导论课程节选

I'm going to now start doing simple problems in mechanics.

现在我来讲解几个简单的力学题目

耶鲁公开课 - 基础物理课程节选