cog

n.轮齿；从属地位的人或物；诈骗；雄榫v.用雄榫连接；欺骗形容词：cogged过去式：cogged过去分词：cogged现在分词：cogging第三人称单数：cogscog英英释义Nouna subordinate who performs an important but routine function;"he was a small cog in a large machine"...