they are first graders, but they are kind Harako and like to write to us. I'll show Harako here, Harako and her regular clothes, but I have this little angle that was sitting up here. The kids would say, "what is that, what is that?"

他们都是一年级学生，很友善,很愿意给我们写信，我给你们展示一下，这是Harako和她的日常服装，这还坐着一个小天使,孩子们回问：,“那是什么，那是什么？“

麻省理工公开课 - 媒体、教育、市场课程节选

Sorry, said that wrong, p1 radius 1 and angle 2, 2 radians is a little bit more than pi half.

而是半径和角度的表示，在这个例子中点，并不对应这个点,它实际上对应的是。

麻省理工公开课 - 计算机科学及编程导论课程节选

May hurt a little bit, but try as much as possible to create a 90 degree angle.

可能有点痛，尽可能形成一个直角。

哈佛公开课 - 幸福课课程节选

self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work.

我创建了，然后给它赋值，然后，噢太酷了，通过做一点额外的工作,就可以得到点的半径和角度了，好，实际上如果。

麻省理工公开课 - 计算机科学及编程导论课程节选