Now granted we're now starting to take this all shuttle theme to an extreme perhaps, but we realized you know what, it's actually not that efficient sometimes to call a phone number, it's not that efficient to pull up the mobile web.

我们现在都已经习以为常了,我们都认为极为平常了，把这些关于班车的程序做的很好了,但我们有些时候拨打一个电话，或上一下移动网络。

哈佛公开课 - 计算机科学课程节选

That's the finger thing from left finger to right finger going back and forth across the board, never touching a number more than once.

在合并时，我的左手手指,和右手手指来回地在黑板上移动，但对每个数字只会碰到一次。

哈佛公开课 - 计算机科学课程节选