Early astronomers thought that our planet was the centre of the universe.早期的天文学家认为我们的星球是宇宙的中心。Space scientists and astronomers have taken another step forwards.航天科学家和天文学家又取得了进展。Astronomers used to ask why only Saturn has...
磨碎一汤匙鲜姜，放入平底锅。Grate a tablespoonful of fresh ginger into a pan.然后那些咖啡豆被磨碎，包装好作为咖啡粉出售。The beans are then ground and packaged for sale as ground coffee.我来上菜，你把帕尔马干酪磨碎。I'll dish up and you can grate the Parmesan....
a virulent form of flu一种致命的流感A very virulent form of the disease appeared in Belgium.比利时出现了这种疾病的一种极其危险的变体。The media has waged a virulent hate campaign against her.新闻界向她发起了恶毒攻击。She is very virulent about her former employ...
Shortly after implantation the blastocyst wall, the trophoblast, consists of two layers of cells.植入之后不久,胚囊的壁, 即滋养细胞含有两层细胞.The blastocyst is then surgically introduced into the uterus of a foster mother.然后通过手术把胚囊引进寄养母体的子宫...