centrist
/ˈsentrɪst/adjective [原级] 持温和政治观点的；主张温和政策的
He had left the movement because it had abandoned its centrist policies. 他离开了这场已放弃其中间派政策的运动。
noun [专属名词] 中立派议员；中间派议员；持温和政治观点者
Some time later he heard that the ship Beagle was going on a trip to South America and needed a centrist. 过了一段时间，他听说比格尔号轮船要去南美旅行，需要一位中间派。
