know a friend from an enemy英语标准发音：know a friend from an enemy英式发音：美式发音：翻译中文知己知彼know a friend from an enemy - 基本释义[词典1]分清敌友 参考资料： 1.百度翻译：know a friend from an enemy2.有道词典：know a friend from an enemy3.爱词霸：know a friend from an enemy
