Demography is the analysis of population variables.人口学是对人口变量的分析.The subject of demography has merged with that of reproductive strategies of organisms.关于生命统计这个课题已渗入了关于有机体繁殖对策的课题.His institute works on issues ranging from...
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....