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第二十一的 2、the twenty-first … · 21的序数词到底是21th还是21st,还是两者两者都可以,但是读法不同21th=twentyoneth21st=twentyfirst序数词是数词的一种,主要在英语语法中讲 … 21st的完整形式: twnety-first,读音: [ˈtwenti] [fɜ:st] twenty first 第二十一 一、短语 1、twenty-first 序数词 ; · 21的序数词到底是21th还是21st,还是两者都可以?在英语中,21的序数词有两种写法,分别是21th和21st。虽然这两种写法都可以使用,但它们在读法 … · 21的缩写是21st还是21th?是21st因为在英文中,它读成是twenty-first1 和 31 都是加 st不过11号是 … · 还有,你看21世纪报纸时,是 21st century 对吧? 你再看 fox 电影公司开头,伴着舞台灯光投射出来的20th centry fox那个黄颜色的雕塑,现在已经 …