There are two classes, two broad classes of drug sort of type ligands that are defined, agonists and antagonists.

这样的配体药物有两类,目前已经明确的配体药物大体上分为两种,分别是激动剂和拮抗剂

耶鲁公开课 - 生物医学工程探索课程节选

So in fact, over the next thirty or forty minutes we're going to show you a set of examples of sort of canonical algorithms, and the different classes of complexity.

在接下来的三四十分钟里面,我们将要讲一系列的,权威算法，以及不同种类的复杂度问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you looked on the classes server you saw Chapter 1, and Chapter 1 describes some of the sort or organization of Biomedical Engineering into sub-disciplines, which I've listed here.

如果你上过班级服务器就会看到第一章,第一章介绍了生物医学工程的,若干亚学科 像这里列出的这样

耶鲁公开课 - 生物医学工程探索课程节选

You can sort classes by skill level (beginner, intermediate or advanced) and by trainer specialty (like brides-to-be, postnatal, exercise novices or elite athletes).

WSJ: The Digital Solution: Working Out With a Trainer and Friends via Webcam

The gist of the ruling is that the owner was trying to do some sort of manipulation based on the different classes.

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