商务英语头像（英文字母头像图片 商务）

 World sing how learn 我的心好冷

 Hello everybody! if you have something to say, then say! if you have nothing to say, go home! 有事起奏，无事退朝

 play a big knife before Guan Gong 关公面前耍大刀

 Know is know ，no know is no know，is know 也. 知之为知之，不知为不知，是知也