Scientists who study Mars have laid down the program that they can follow.
研究火星的科学家们已经制定了他们可以遵循的计划。
They say that men are from Mars and women are from Venus.
有人说：男人是来自火星、女人是来自金星。
Evidence also suggests that Mars may have been even more habitable in the past.
有证据表明，火星过去的环境也许更适宜生命存在。
And how is it known that Mars had hafnium-187?
那么是如何知道火星有铪- 187的呢？
I think that would have to be a manned mission to Mars.
我觉得肯定是载人火星任务。
Prof Pillinger argues that Mars is the most likely place to find alien life.
Pillinger教授认为火星是最有可能找到外星生命的地方。
The gravity on Mars is a third of that on Earth.
火星的重力是地球的1/3。
But a new study throws cold water on that temperate Mars.
然而一项新的研究却向温和的火星泼了冷水。
I think that there's life on Mars because scientists have found water there.
我认为火星上有生命，因为科学家已在那儿找到了水。
Scientists assume that there is no life on Mars.
科学家们假定火星上没有生命。
This is one reason that Mars has received so much of their attention.
这也是火星受到如此多关注的一个原因。
The gravity on Mars is only about three-eighths of that on Earth.
火星引力大约只有地球引力的八分之三。
But the Mars society doesn't want to wait that long.
但是火星协会不希望等待那么长的时间。
Recent orbital images show that water might still occasionally flow on the surface of Mars.
最近的轨道照片显示水仍然偶尔流过火星表面。
Think of Mars as the planet that supplies the high-energy fuel for your rocket.
把火星看作为你的火箭提供高能量燃油的行星。
The atmosphere of Mars is not so dense as that of the earth.
火星的大气密度不及地球的大。
Imagine that men are from Mars and women are from Venus.
设想男人是从火星上来的，女人是从金星上来的。
He contended that there must be life on Mars.
他声称火星上面一定有生物。
It may be safely assumed that there is no animal life on Mars.
可以有把握地认为火星上是没有动物生命的。
Imagine that men are from Mars and women are from Venus. One day, long ago.
设想男人是来自火星，女人是来自金星的。很久以前。
That one is Mars, my son, can you say it.
那一颗是火星，儿子，你来说说看。
Mars and Mercury are smaller than that, and you can see them, too.
尽管火星和水星比木星要小，但我们依然能看到。
Life on Mars is totally different from that on the earth.
火星上的生活与地球上的生活完全不一样。
Chances are that man will eventually land on Mars.
人类有可能最终登陆火星。
Scientists think that there was, and even can still be, life on Mars.
科学家们认为火星上曾经有过生命，甚至现在也还可能有。
He quickly learns that gravity on Mars is much less than on Earth.
他很快知道了火星上的万有引力比地球上小很多。
He quickly learns that gravity on Mars is much less than on Earth.
他很快知道了火星上的万有引力比地球上小很多。
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