每循环一次，外部循环都使循环计数器变量递减一次。

The outer loop decrements a loop counter variable each time through the loop.

youdao

变量一般最好根据用途命名（如 firstName或rtitle），不过由于这个变量基本上是一个循环计数器，也可使用单个字母。

Normally, variables are best named by their use (like firstName or title), but as this variable is essentially a loop counter, using single letters is also fine.

youdao

变量一般最好根据用途命名（如 firstName或rtitle），不过由于这个变量基本上是一个循环计数器，也可使用单个字母。

Normally, variables are best named by their use (like firstName or title), but as this variable is essentially a loop counter, using single letters is also fine.

youdao