1、三十的英语是:thirty,读音:英[ˈθɜːti] / 美 [ˈθɜːrti]。
2、相关短语:Thirty years 三十多年来 ;Thirty Degrees 三十度;Thirty Poems 诗三十首.
3、例句:(1)By this time he was thirty 。到那时他30岁了。(2)I can verify that it takes about thirty seconds. 我能证明,这大约要用30秒的时间。