World War I left an indelible imprint on the twentieth-century world.
第一次世界大戰(zhàn)給20世紀(jì)的世界留下了深遠(yuǎn)的影響。
Some have called him the greatest entertainer of the twentieth century.
有人稱(chēng)他為20世紀(jì)最偉大的表演藝術(shù)家。
This was how I stepped into my twentieth year.
我就是這樣地跨進(jìn)我的二十歲。