前缀是指置于单词前面的字母组合，它们可以表达不同的意义。

Prefixes are small groups of letters that you put in front of words to give them different meanings.

youdao

前缀是指置于单词前面的字母组合，它们可以表达不同的意义。

Prefixes are small groups of letters that you put in front of words to give them different meanings.

youdao