OK. So, what do I want you to take away from this? This idea of binary search is going to be a really powerful tool. And it has this property again, of chopping things into pieces.

从这里学到些什么？二分查找的思想,是一个非常有用的工具,我重复一遍，把问题拆成几部分来解决,那事实上，这里的增长率是多少？

麻省理工公开课 - 计算机科学及编程导论课程节选

And I think frankly that is irresponsible to completely throw away this useful tool

所以，我认为，完全放弃这样一种有用的工具也是十分不负责任的。

需要动物实验吗？ - SpeakingMax英语口语达人

I think it's pretty widely known that asset allocation is far and away the most important tool that we have available to us as investors.

我认为,人尽皆知,资产配置是,投资者可用的工具中,最重要的工具

耶鲁公开课 - 金融市场课程节选

it was reversible, so you can give people money and take it away, and you could actually scale the amount of money, so it makes a very handy experimental tool.

这个过程是可逆的，这样你可以给人钱，然后拿走，而且你还可以积攒钱，这就让钱成为了一种非常有用的试验工具。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选