His comments have ignited a firestorm of criticism from health officials and activists who said his words were unrealistic and unscientific.

VOA: standard.2009.03.29

So I've removed the comments, the things that start with slash slash from the slides just so you have an opportunity engage more intellectually rather than just reading the answers off the screen.

我把注释去掉了，那些双斜杠,右边的文字,所以这样你你们可以做一些思考,而不是阅读屏幕上的答案。

哈佛公开课 - 计算机科学课程节选