21世纪 21st century 用英语怎么读 twentieth one
问题描述:
21世纪 21st century 用英语怎么读 twentieth one
答
21st = twenty-first ['twenti 'fə:st]
21世纪 21st century 用英语怎么读 twentieth one
21st = twenty-first ['twenti 'fə:st]