A progress bar is not supposed to print one hundred lines just to update its status; generally we like to see a little animation.

一个进度条不应该是打印100行,只是更新它的状态，一般地，我们,想看到一点生机。

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It's going to be my sort of simple implementation of a progress bar.

它将是一种我的,简单的执行进度条。

哈佛公开课 - 计算机科学课程节选

PROFESSOR: So, does anyone have any questions about the set up here, does it make sense what we're looking for the bar to go back once we make some progress.

教授：所以，有人对这套装置,有疑问吗，一旦我们,取得了一些进展,我们看到这个棒又返回来。

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