And notice, unlike Scratch where some of you might have realized it starts to get a little ugly, you have an "if else" and then you have another here and another one and things start to move and move and move like this, it gets very messy.

请注意，不像Scratch，在那里,你们其中某些人可能认识到它变得有点丑，你有一个“if，else“然后这里又另一个,那里又有一个，代码就像这样开始跳转，跳转再跳转,它开始变得有点凌乱了。

哈佛公开课 - 计算机科学课程节选

There's a kind of puzzle there as to-- even if, before we move to the question, how widespread are cases like this?

这里又产生了一种疑团-,甚至在我们探讨，这种案例有多普遍之前？

耶鲁公开课 - 死亡课程节选

Good question, so there is this little reading head kind of like in an old phonograph player that does move back and forth and in and out depending on the implementation.

好问题，这就像,老留声机里的小读头,它通过来回移动,来完成不同的操作。

哈佛公开课 - 计算机科学课程节选