And for reference, incidentally, in case you ever forget what the point of some exercise was, I'll almost always comment the code up top with a quick sentence or two that reminds you what this program does.

顺便作为参考，为了避免我们可能忘记一些代码的意思，我通常会用一两个简单的句子,在上面作出注释,那样会提醒我们这个程序是干嘛的。

哈佛公开课 - 计算机科学课程节选

Monday evening will be the time at which the midterm exam will be posted on the website, and that'll be at 6:00 pm Monday evening. You'll have a 24-hour period of time in which to find--I forget what I said--30 or 40 minutes? It'll be clear on the instructions. To just sit and treat it as if you're in an in-class exam situation, and write your essay.

周一晚上期中考试的内容会,粘贴到网站上，应该是晚上六点,你可以在一天之内抽出30到40分钟完成考试0,这在说明上都写明了,就把它当作课堂考试对待，写一篇短论文。

耶鲁公开课 - 旧约导论课程节选