也就是说，单位长度等于半径。

So, take the length unit to be equal to the radius.

youdao

这条船的长度等于那条船的宽度。

The length of this boat equals the width of that boat. (=This.

youdao

走廊的长度等于房子上层的长度。

A hall ran the length of the upper floor of the house.

youdao

Notice what it says. I'm going to pass in 1 a string, call it s, binds it locally, and it says the following.

然后看接下来的内容,接下来说的是如果这个字符串的长度等于，那么我就成功了。

麻省理工公开课 - 计算机科学及编程导论课程节选

N So, I'm initializing a variable called N to the string length of s1.

我初始化一个变量,等于s1的字符串长度。

哈佛公开课 - 计算机科学课程节选