By Spring Break he'd gotten sufficiently sick that his doctor basically said, "You can't continue in school anymore.

春假的时候，他病得十分严重,他的医生直截了当地说，“你不能再上学了。

耶鲁公开课 - 死亡课程节选

Now at Harvard Thinks Big I happened to tear into this thing myself and it would seem a little pointless to re-hash that same demo so instead I thought I'd solicit an ideally sufficiently strong volunteer to come on up.

现在在“哈佛大梦想”的讨论会上,我反复思考这件事,觉得再演示一遍似乎意义不大,因此我想找一位合适的志愿者,上讲台来。

哈佛公开课 - 计算机科学课程节选