Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.
火星的大气层极其稀薄，几乎全部由二氧化碳构成。
柯林斯例句
The planet Mars will be visible to the naked eye all week.
整周都可以用肉眼观察到火星。
柯林斯例句
He stole a Mars bar from the school tuck shop.
他从学校小吃店偷了一条玛氏巧克力棒。
柯林斯例句
an unmanned Mars mission
无人火星探测
《牛津高阶英汉双解词典》
He contended that there must be life on Mars.
他坚信火星上面一定有生物.
《简明英汉词典》
As of now we don't know much about Mars.
目前我们对火星还知之甚少.
《简明英汉词典》
Mars has two small moons.
火星有两个小卫星.
《简明英汉词典》
Does life exist on Mars?
火星上有生命吗?
《现代汉英综合大词典》
Mars is too faint and too low in the sky to be observable.
火星星光暗淡，位置低悬，难以看见。
柯林斯例句
It will be a long time before any landing on Mars can be attempted.
试图在火星上着陆是一件遥远的事.
《用法词典》
Aphrodite soon left him for Ares ( Mars ), the handsome god of war.
不久阿芙罗狄蒂离开他到漂亮的战神阿瑞斯 ( 即马尔斯 ) 那儿去了.
英汉非文学 - 百科语料821
Living on Mars would be like living on a very high mountain.
在火星上生活就像住在一座非常高的山上.
英语晨读30分（高一）
The image of Mars is always accompanied by two little dots.
火星星像的近旁总有两个小点.
辞典例句
The diameter of Mars is slightly over half that of the earth.
火星的直径比地球的半径稍大些.
辞典例句
The living things on the earth could not subsist on Mars.
地球上的生物不可能在火星上生存.
辞典例句
Elon Musk's SpaceX aims to send an unmanned aircraft to Mars by 2018.
2018年6月四级真题（第一套）听力 Section ABut they can attain more distant orbits; NASA plans for most of its future Earth-escaping payloads to the moon and Mars especially to carry CubeSats.
2019年6月六级真题（第三套）阅读 Section BNasa is worried about two things: recovery time once astronauts return home, and, more importantly, how to maintain strength and fitness for the two and a half years or more that it would take to make a round-trip to mars.
2015年高考英语湖北卷 阅读理解 阅读D 原文