John Dalton was an Englishman who proposed the following classification of the elements.

他是一个英国人,支持之后的元素分类法。

麻省理工公开课 - 固态化学导论课程节选

Another kind of monoline insurance is health insurance company that merely insures people against health costs, and another important category is life insurance.

另一类单线保险公司是健康保险公司,它们专门为人们的医疗费用提供保险,另外一个重要的分类是人寿保险公司

耶鲁公开课 - 金融市场课程节选

One useful thing about separating receptors into types or families is that we found that many different receptors work by the same basic underlying mechanism.

我们将受体进行分类的一个依据,就是我们发现,很多受体有相同的作用机制

耶鲁公开课 - 生物医学工程探索课程节选