noun🔗Share四胞胎 One of a group of four babies born from the same mother during the same birth."The couple was overjoyed to learn they were expecting a quadruplet. "这对夫妇得知他们怀了四胞胎，欣喜若狂。familyhumanbiologyphysiologymedicinenumbergrouppersonChat with AIVocabulary GamePractice Reading
noun🔗Share四连音 A tuplet of four notes."The student struggled to fit the quadruplet into the one beat allowed in the sheet music. "那个学生费了好大的劲，才把那个四连音塞进乐谱中允许的一个节拍里。musicnumberChat with AIVocabulary GamePractice Reading
noun🔗Share四元组，四重奏 A sequence of four elements."The teacher asked the students to write down a quadruplet of adjectives to describe the main character. "老师要求学生们写下一组四个形容词来描述主角。familynumberChat with AIVocabulary GamePractice Reading
noun🔗Share四人協力車 A cycle for carrying four riders, arranged so that all the riders can assist in the propulsion."The family built a custom quadruplet so all four siblings could cycle together. "这家人定制了一辆四人協力車，这样四个兄弟姐妹就能一起骑车了。vehiclesportChat with AIVocabulary GamePractice Reading
