controversial

the controversial issue of welfare reform

福利改革这一有争议的话题

a highly controversial (= very controversial ) plan to flood the valley in order to build a dam

一个把山谷淹掉来建造水坝的极具争议的计划

He is a controversial figure (= person who does controversial things ) in the art world.

他是艺术界极具争议的人物。