In addition to many lectures, we have the working groups pleased to do both experiments and to do problem-solving exercises.

我们不仅有讲座，还有不同的小组,他们将做实验,和解决问题的练习。

麻省理工公开课 - 媒体、教育、市场课程节选

But practice this, because it's something that's such an easy way to ask such a variety of questions.

但是你仍然需要好好练习，因为这个简单的用法能够提出各种各样的问题。

Where 课堂 - SpeakingMax英语口语达人

And this is the same periodic table that you're going to get in your exams, so it's good to practice doing your problem-sets with that periodic table so you're not relying on having the double check right there of seeing what the electron configuration is.

这也是你们考试时会用到的相同的表,这样你们就不会，所以使用周期表来做问题集,是很好的练习,这样你们就,不会依赖于再次确认,电子构型是什么了。

麻省理工公开课 - 化学原理课程节选