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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

That has been coupled with an unprecedented rise in prosperity, particularly in the big cities, which in turn has helped spread nouveau-riche-type attitudes among the prospering classes.

CNN: LITTLE EMPERORS

What if in history the type of mentality of the wealthy and the ruling classes is the most important indicator of the future of that civilization?

FORBES: Connect

If the thrust of the argument is that modern men and boys deserve a different type of academic attention, why not just introduce new classes?

FORBES: Is Feminism Getting In The Way of "Male Studies?"