1.The discovery that the universe is expanding was one of the greatest intellectual revolutions of the twentieth century.
宇宙膨胀的发现是20世纪最伟大的智力革命之一。
2.By the middle of the twentieth century, painters and sculptors in the U. S had begun to exert a great world influence over art .
在二十世纪中期，美国的画家和雕刻家开始在艺术领域产生了世界性的巨大影响。
3.The overall aim is to understand the changing roles of physics and of physicists over the course of the twentieth century.
整体目标是要了解物理学与物理学家们在廿世纪中不断变换的角色。
4.The coal consumption has declined since the early years of the twentieth century.
自20世纪的早些年起，煤的消耗就下降。
5.He was one of the most prolific writers of the twentieth century as well as a distinguished professor at the University of Cambridge.
他不仅是剑桥大学的一位杰出教授，而且还是二十世纪最多产的作家之一。
6.The computer was one of the great inventions of the twentieth century.
电脑是二十世纪其中一项伟大的发明物。
7.By the middle of the twentieth century, painters and sculptors in the United States had begun to exert a great worldwide influence over art.
到了二十一世纪中叶，美国画家和雕塑家开始在世界范围内对艺术产生重大影响。
8.Or out of the same kind of unwavering faith in transformation that Mao had been preaching since the Teens of the twentieth century?
还是出于对毛泽东自{##**$$}二十世纪一零年代以来一直在宣扬的变革坚定的信仰？
9.This was a preview to his great project, "People of the Twentieth Century" , on which he laboured until he died in 1964 aged 87.
肖像集所预展的是他之后宏大的摄影项目《二十世纪的人们》，为了这个项目他不辞劳苦地工作直到他于1964年去世，享年87岁。
10.Most Americans have had access to safe drinking water since the early twentieth century, when municipal supplies began to be disinfected.
从20世纪初期开始，从美国市政供水开始对自来水进行消毒开始，大多数美国人都能喝到安全的饮用水。