It is the only tangible object the astronomer can handle.这是天文学家能够掌握的唯一可接触的对象.FRAN ? OISE COMBES, an astronomer at the Paris Observatory, is a leading expert on galaxy dynamics.康布任职于法国的巴黎天文台, 她是研究星系动力学方面的顶尖天文学家.There was ...
An astronomer can determine the brightness of each star.天文学家能够测定每颗恒星的亮度。A new star attracted the notice of the astronomer.新发现的一颗星引起了那位天文学家的注意.It is the only tangible object the astronomer can handle.这是天文学家能够掌握的唯一可接触的对象....
In August 1935 , we began our march across the marshy grassland.1935年8月, 我们开始过草地.There is a reach of grassland in the distance.远处是连绵一片的草原.Animal husbandry on the grassland is developing rapidly.草原上的畜牧业在迅速发展....