每隔三四年，条件适宜时，湖面上就会布满火烈鸟，它们停止飞行开始繁殖。

Once every three or four years, when conditions are right, the lake is covered with the pink birds as they stop flight to breed.

youdao

因此，我们的函数需要一个条件，告诉它何时停止。

Therefore, our function needs a condition to tell it when to stop.

youdao

大多数语言都具有一项称为断言的特性，这是一种会在满足某项条件时停止处理的语句，例如重要变量中出现超出预料的值。

Most programming languages have something called an assert-a statement that stops the processing when a certain condition is met, such as an unexpected value in an important variable.

youdao

All right. Then we're going to set low to-- low and high, and we're going to perform exactly the process I talked about.

不满足条件,我们就可以直接停止运行了，好，接下来我们要定义边界值,然后按照我之前。

麻省理工公开课 - 计算机科学及编程导论课程节选