“火星的”用英语怎么说？

火星的大气层极其稀薄，几乎全部由二氧化碳构成。Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.火星的大气层中只含有极少量的水。The Martian atmosphere contains only tiny amounts of water.火星的直径比地球的半径稍大些.The diameter of Mars is ...