[gòng tóng]
（属于大家的； 彼此都具有的） common
common enemy
共同敌人
common goal
共同目标
common wish
共同愿望
matters of common concern; issues of common interest
共同关心的问题
common language
共同语言
have something in common
有共同之处
（大家一起） together; jointly
live together; collective life
共同生活
make joint efforts
共同努力
fight side by side
共同战斗
prosperity for all; become increasingly well off together; common prosperity
共同富裕
act in concert
共同行动