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打破传统信仰(或习惯)者
If you describe someone as an iconoclast, you mean that they often criticize beliefs and things that are generally accepted by society.
例句
Cage was an iconoclast. He refused to be bound by western musical traditions of harmony and structure.
凯奇是个反传统的人。他拒绝接受西方有关和声和结构的音乐传统的束缚。