iconoclast
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/aɪˈkɑːnəklæst/
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/aɪˈkɒnəklæst/
Someone who challenges and breaks established ideas or beliefs.
The scientist was considered an iconoclast for questioning the long-held theories of his field.
这位科学家因质疑他所在领域的长期坚持的理论而被认为是一个打破传统的人。