名词四个一组，四人一组，四位一体

1. 四位一体;四人一组：quaternion 四个一组;四人一组;四元数;四元法 | quaternity 四位一体;四人一组 | quaver 颤音;震动;颤抖;发颤音

2. 四个一组：quaternion 四个一组 | quaternity 四个一组 | quatrain 四行诗

3. 四个一组/四人一组/四位一体：quaternions /四元法/ | quaternity /四个一组/四人一组/四位一体/ | quatrain /四行诗/

noun

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

    Synonym: four4IVtetradquaternquaternionquaternaryquartetquadrupletfoursomeLittle Joe