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The set of all sets that do not contain themselves as members (a concept used in stating Russell's paradox).
1950s; earliest use found in The Philosophical Review.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。