Within our own galaxy there are probably tens of thousands of planetary systems.在我们自己的星系里可能有数以万计的行星系。These bands must introduce longitudinal asymmetry in the planetary albedo.这些云带必定引起行星反照率的经向不对称性.The sciences of planetar...
我们无法估量的知识资源是不断发展永不枯竭的.Our imponderable resources in knowledge are constantly growing and are inexhaustible.枯竭的河床,并不感谢它的过去.The dry river - bed finds no thanks for its past.枯竭的河床觉得无需向丰水期表示谢意.The dry river – bed finds no th...