生命无法在火星的大气环境下生存。
火星自转一周的时间比地球长。
从火炉迸出的火星点燃了地毯。
风把火星和炉渣吹得飞了起来。
火星和地球的轨道随着时间而发生改变。
火星太暗,在空中位置太低,所以观测不到。
烟囱里飞出无数火星。
微型火箭附在宇宙飞船上,用来推进飞船飞向火星。
The tiny rocket is attached to the spacecraft and is designed to propel it toward Mars.
从现在开始30年内,美国会把载人航天器送上火星。
In thirty years from now the United States should have a manned spacecraft on Mars.
火星周围有一个薄薄的大气层,几乎全由二氧化碳构成。
Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.
奥森•威尔斯使得许多美国人相信他们正遭到火星人的入侵。
Orson Welles managed to convince many Americans that they were being invaded by Martians.
火星上的盾状火山还处于活跃期吗?
我们将能在三天内往返火星。
We will be able to travel to Mars and back in just three days.
火星表面的图像显示出了数百座火山。
Images of the Martian surface reveal many hundreds of volcanoes.
但我要暂时先跳过火星后面的这颗行星。
火星是离地球最近、和地球最相似的行星。
The planet Mars is the closest and most similar planet to Earth.
太空探测照片显示火星表面存在巨大的火山。
Space-probe photographs indicate the existence of giant volcanoes on the Martian surface.
中国的首个火星任务预计将在2020年完成。
China's first Mars mission is expected to be carried out by 2020.
这些火山没有一个是由于火星地壳板块之间的碰撞而形成的——火星上没有板块运动。
None of these volcanoes was formed as a result of collisions between plates of the Martian crust—there is no plate motion on Mars.
火星的大气层只含有微量的水。
剑砍在石地上,火星飞溅。
无数火星儿向四处飞溅。
植物和动物现在不能在火星上生活。
在春季和夏季,火星表面被强风暴覆盖。
During spring and summer, the surface of Mars is covered by strong storms.
今天他们仍然不确定火星上是否有生命。
很久以前,人们普遍认为火星上有生命。
A long time ago it was widely believed that there was life on Mars.
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