21岁的英文怎么写

21 years old望采纳谢谢~~

twenty—one yrs old

有很多种写法 21 years old 或者twenty one years old或者twenty-one year old或者at the age of 21

21岁的英文：21 years old   或者 twenty-one years old。

岁

twenty-one year oldor twenty one years old

twenty one years old

21岁21 years old或twenty-one years old