Your first responsibility in that role is to make sure the president is well prepared as possible to do his job.

我们的首要任务,是确保总统,做好充分准备,来开展他的工作。

普林斯顿公开课 - 国际座谈会课程节选

And of course you will come to your discussion sections in the same state of joyful preparedness.

当然你们也需要参与到讨论中来,并做好充分的课前准备。

耶鲁公开课 - 现代诗歌课程节选