usual common average的区别是.

usual common average的区别是. 急需usual,typical,common,normal,ordinary,regular,average的区别 单词当average解释为普通的 时候 usual general ordinary common的区别?用法? general,usual,common,average有哪些具体或本质的区别? commom average usual general是区别 Ordinary common normal usual的区别. normal usual ordinary common的区别? normal usual regular common的区别 usual ordinary common frequent区别 usual common general ordinary 区别 usual average general common 哪个可以形容man common、normal、ordinary、usual的区别 Letterboxes are much more___