The first problem set asked you to manipulate the model that I just presented-- the model of how you form portfolios and the model of the capital asset pricing model.

第一道习题,考察的是你们能否活用我刚刚给出的几个模型-,包括怎样构成投资组合的模型,和资本资产定价模型。

耶鲁公开课 - 金融市场课程节选

So it's something you should learn easily and use often.

因此这是个你好掌握的句型同时要活学活用。

When 课堂 - SpeakingMax英语口语达人

The "let's" pattern is a great pattern that you really should memorize and put to use often if you don't already.

et's句型是一个非常棒的句型，你需要尽量记住它并且多多活用。

Let's 课堂 - SpeakingMax英语口语达人