异己yìjǐ同一集体中在立场、政见或重大问题上常跟自己有严重分歧甚至敌对的人{dissident; alien; sb. in one's group who differs greatly on stand, political views or major issues, or is even antagonistic}: ～分子{dissident; alien}|排除～。{exclude or eliminate those who hold different views; get rid of dissidents}