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.空间站在重返地球大气层时会被烧毁。The station would burn...

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“大气层”的拼音为：dà qì céng...