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Chinese dictionary
derogregard oneself as infallible; be opinionated; be self-opinionated; be self-righteous; believe oneself to be infallible
自以为是地搞另一套的人必定犯错误。
Someone who goes their own way believing themselves to be in the right will surely make mistakes.
他总是自以为是、浮华、恼人。
He can be self-righteous, pompous and annoying.
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