It's a cliche--People say, let's not reinvent the wheel here, so let's go back to that.

人们会说这是陈词滥调了，咱们别在这白费口舌了，咱们还得从头说起。

耶鲁公开课 - 金融市场课程节选

You're not going to start for the rest of your life if you ever need to solve a problem with a computer from scratch, odds are you're going to reach for some off the shelf packages or libraries or tools that other people wrote so that people like us don't have to reinvent the wheel again and again.

如果你想用Scratch来解决问题,却使用其他人写的程序,或者利用现成的资料或工具,这样以来,我们的确可以避免做重复性的工作,但却永远学不会编程。

哈佛公开课 - 计算机科学课程节选