函数的作用是：从一个字符串的右边结尾处，删除预定一字符中所包含的空格。

The chop() function will remove a white space or other predefined character from the right end of a string.

youdao

函数的作用是：从一个字符串的右边结尾处，删除预定一字符中所包含的空格。

The chop() function will remove a white space or other predefined character from the right end of a string.

youdao