专业的调息的方法练习（交替鼻孔呼吸法）需要在有经验医师的指导下进行。 空腹练习为宜。

More advanced methods of pranayama (alternate nostril breathing) need to be practiced with an experienced practitioner. practicing on an empty stomach is preferred.

youdao

要想真正掌握某一专业知识或技能，就要花时间进行复习和练习，此外别无选择。

For truly mastering a subject-area or skill there simply is no substitute for putting in the time to review and practice.

youdao

要和各种各样的人进行上面的这种练习，比如专业的网管员，难以相处的人，以及和你性格相似的人等等。

Observe how the other party handles him/her. Try this exercise with different people – from savvy networkers, someone you find difficult to deal with as well, someone similar to you, etc.

youdao

But the kind of exercise we did last time is a useful exercise for those of you who are Econ majors.

但是我们上节课做的练习,对经济学专业的同学是非常有用的

耶鲁公开课 - 博弈论课程节选