twenty-first num. 第二十一. 例句 Welcome to the twenty-first century. 欢迎进入21世纪。 What defines a twenty-first-century entrepreneur? 21世纪...
21的英文序数词twenty-first. 例句 Welcome to the twenty-first century. 欢迎进入21世纪。 Seventeen civilians were hurt. Most are students who had b...
