twenty-first
🇺🇸
/ˌtwenti ˈfɜːrst/
🇬🇧
/ˌtwenti ˈfɜːst/
noun
R
The celebration or event that marks someone's 21st birthday.
On her twenty-first, she received a trip to Paris as a gift.
在她二十一岁生日时，她收到了一次去巴黎的旅行作为礼物。
translation
21岁生日
词形变化
Plural
twenty-firsts