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quaternity是什么意思

quaternity

美[kwə'tɜːnətɪ]  英[kwə'tɜːnɪtɪ]
n.  四个一组;四人一组;四位一体
  近义词:foursome,quadruplet,quartet,tetrad,4,IV,quaternary,quaternion,quatern,four,

英英释义

Noun
  1. the cardinal number that is the sum of three and one
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