In the spring, our courses focus, not so much on the theory, but now move to the application of positive psychology since it's a master of applied positive psychology.

春季，我们的课程，不再以理论为焦点，而是转向积极心理学的应用,因为这是应用积极心理学硕士学位。

哈佛公开课 - 幸福课课程节选

It's very easy to use. But something you really should master.

这个句型很容易就能学会，这也是你必须得掌握的一个句型。

When 课堂 - SpeakingMax英语口语达人