I think you should take the lab sometime, but I don't know how many semesters that you have to take.

我觉得你们应该是不是地去做几次实验,我不太清楚你们要上多少个学期的课

耶鲁公开课 - 基础物理课程节选

And I say, no, I think any of you should know that potassium lies under sodium.

我要说的是，你们应该知道,钾是在钠的下面的。

麻省理工公开课 - 固态化学导论课程节选