火星和地球的轨道随着时间而发生改变。
火星自转一周的时间比地球长。
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.
生命无法在火星的大气环境下生存。
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.
火星上的盾状火山还处于活跃期吗？
从烟囱里冒出的火星燃着了屋顶板。
在火星上，直径小于5公里的陨石坑相对较少。
On Mars, there are relatively few craters less than 5 kilometers in diameter.
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.
你可以用iPhone 获得火星的实时天气报告。
You can get the real time weather reports for Mars with the iPhone.
流出通道可能是很久以前火星上发过洪水的遗迹。
Outflow channels are probably relics of catastrophic flooding on Mars long ago.
美国宇航局有条不紊的火星探索方式尚未解决这些问题。
NASA's methodical approach to the exploration of Mars has not yet answered the questions.
研究火星的科学家们已经制定了他们可以遵循的计划。
Scientists who study Mars have laid down the program that they can follow.
从火炉迸出的火星点燃了地毯。
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.
火星清晰可辨，正好就在望远镜的中心。
火星的大气层只含有微量的水。
水银是一种液态金属，而水星这颗行星，是肉眼能看到的运动最快的天体。火星，为什么火星是红色的？
Mercury is a liquid metal, and mercury, the planet, is the fastest moving naked eye heavenly body. Mars, why is Mars red?
地球表面低重力直接导致了火星上火山的巨大高度。
The great height of Martian volcanoes is a direct consequence of the planet's low surface gravity.
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.
当第一次用望远镜观测到火星时，人们从飞机上看到，火星的圆盘在地球上纵横交错。
When the planet Mars was first observed through a telescope, people saw that the round disk of the planet was crisscrossed on earth that are viewed from an airplane.
当第一次用望远镜观测到火星时，人们从飞机上看到，火星的圆形圆盘在地球上纵横交错。
When the planet Mars was first observed through a telescope, people saw that the round disk of the planet was criss-crossed on earth that are viewed from an airplane.
火星表面的另一个显著特征是它的凹凸不平。
机遇号对于火星地理结构的解读总是揭示出一个存在于远古火星的，来自于海洋性酸股介水坑的废弃风沙之地。
The geologic story the Opportunity read there always spoke of an ancient martian wasteland of windblown dunes pocked by the occasional acid-laced puddle.
火星是红色的，非常冷。
火星是太阳系中最轻的行星，这使得火星成为太阳系中第二小的行星。
Mars is the lightest planet in the solar system, which makes Mars the second smallest planet in the solar system.
火星和地球距离最近时，宇宙飞船从地球到达火星要大约8个月的时间。
It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other.
火星登陆车“祝融号”在火星的着陆表明中国在太空探索方面取得了巨大进展。
The landing of China's rover Zhurong on Mars shows China has made great progress in space exploration.
火星绕太阳公转的周期是687天，这意味着火星上的1个地球年是687天。
Mars orbits the Sun in 687 days, which means 1 Earth year on Mars is 687 days.
夏天，火星附近的温度有时可以达到70度。
At times in the summer near the Mars the temperature can reach 70 degrees.
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