Just to illustrate the kind of issues that we're up against here, let me just consider a few different chemical reactions, all of which happen spontaneously.

为了说明我们的观点,考虑一些，不同的化学反应，这些化学反应都是自发进行的。

麻省理工公开课 - 热力学与动力学课程节选

There are lots of other writers we could include, including those two that I named, that would equally illustrate some of the threads that I've got on the syllabus now, but these are the ones for various practical and more substantive reasons that I have chosen.

我们其实还可以讲很多其他作家，包括刚才提到的那两位,他们也能阐述我大纲里的一些主题思想，但是因为各种实用并且更为实在的原因的存在,我才选了这些作家的作品。

耶鲁公开课 - 1945年后的美国小说课程节选

You're not responsible for these paintings, but we'll illustrate ways in which the Dutch Republic, and their social structure, and what they emphasized, and who they thought they were was very different than, for example, la belle France.

你不必深究这些画作,不过我们将从荷兰的民主制度,社会结构,和他们自己所强调的特征上解释这些画的含义,他们认为自己和其他人很不一样,例如,和美丽的法国之间的不同

耶鲁公开课 - 欧洲文明课程节选