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/
1. The overall layout of the cause of socialism with Chinese characteristics as a quaternity has taken shape.
noun
1. quaternity
1. the cardinal number that is the sum of three and one
Synonym: four 4 IV tetrad quatern quaternion quaternary quartet quadruplet foursome Little Joe