quadruplet
🇺🇸
/kwɑːˈdruːplət/
🇬🇧
/ˈkwɒdrʊplət/
a group of four children born at the same time to the same mother
The quadruplet sisters are all very close and share many interests.
這四胞胎姐妹非常親密,分享許多共同的興趣。