twenty
/ˈtwentɪ/cardinal number
(pl. -ies)
1- the number equivalent to the product of two and ten; ten less than thirty;20二十; 二十个：
twenty or thirty years ago
20或30年前
twenty of us stood and waited
我们20个人站在那儿等着
a twenty-foot aerial
一根20英尺长的天线。
(Roman numeral: xx or XX. 罗马数字：xx或XX.)
1.1
twenties
the numbers from twenty to twenty-nine, especially the years of a century or of a person's life二十几; 二十年代; 二十几岁：he's in his late twenties.
他二十好几了。
1.2
- twenty years old二十岁：
he's about twenty.
他大约20岁。
1.3
- twenty miles an hour时速二十英里。
1.4
- a size of garment or other merchandise denoted by twenty（衣服等商品的）二十号。
派生词
twentieth
ordinal numbertwentyfold
adjective & adverb词源
Old English twentig, from the base of TWO + -TY2.