In_word_set: This routine USES hash to determine whether a particular string belongs to the user-supplied list, using one string comparison in the most common case.

in _ word_set：该例程使用hash确定某个字符串是否属于用户提供的列表，大多数情况下只使用一个字符串比较。

youdao

In_word_set: This routine USES hash to determine whether a particular string belongs to the user-supplied list, using one string comparison in the most common case.

in _ word_set：该例程使用hash确定某个字符串是否属于用户提供的列表，大多数情况下只使用一个字符串比较。

youdao