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種族優越論者; (通常指)白人至上主義者
A supremacist is someone who believes that one group of people, usually white people, should be more powerful and have more influence than another group.
例句
...a plot by White supremacists to blow up a Black church in Los Angeles.
白人至上主義者試圖炸毀洛杉磯一所黑人教堂的陰謀
...a white supremacist group.
一個白人至上主義者組織