So now that we begin to have this ability to express strings in memory, to understand what they are, we can start to apply actually real-world algorithms to them.

现在我们开始用这个技能来在内存中表达字符串,来理解它们是什么，我们可以开始,我们可以对其使用实际的，现实生活中的算法。

哈佛公开课 - 计算机科学课程节选

Now finally swap has the ability, the power, to modify memory that isn't his own, that's not in his own scope because we've passed it in by address.

最终swap有能力，来修改不属于它的内存，不在它的作用域中,因为我们是通过地址传递的。

哈佛公开课 - 计算机科学课程节选