集合論 Save Sign in to save words Simplified: 集合论 jíhélùn ㄐㄧˊ ㄏㄜˊ ㄌㄨㄣˋ set theory (math.) Character by character 集(jí)gather 合(hé)close 論(lùn)opinion A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0