请输入您要查询的英文单词：
单词
ˌtwenty-ˈfirst
释义
ˌtwenty-ˈfirst
NOUN
C
BRITISH
someone’ s 21st birthday , when they often have a party to celebrate the fact that they have become a full adult 21岁生日（通常会举行聚会来庆祝自己成为成年人）