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So far, nobody knows whether there would be enough water or oxygen on Mars for people there. Moreover, scientists are not sure whether plants could grow on Mars. Food would most probably be in the form of pills and wouldnot be so tasty.
到目前为止，没有人知道火星上是否有足够的水和氧气供人类生存。而且，科学家也不确定植物是否能在火星上生长。食物很大可能会以药片的形式存在，而且味道没那么可口。
Gravity could be another problem. The gravity on Mars is only about three-eighths of that on the Earth. Peoplewould have to wear boots that are specially designed to prevent themselves from floating off into space.
重力可能会是另一个问题。火星上的重力大约只有地球上的八分之三。人们可能得穿上特殊设计的靴子，防止自己漂浮到太空中去。
Compared with life on the Earth, life on Mars would be better in some ways. People would have more space. Theymight live in houses with huge comfortable rooms. Also, robots would do most of their work so that they could have more time to relax.
与地球上的生活相比，火星上的生活在有些方面要好些。人们会有更多的空间。他们可能住在房间又大又舒适的房子里。而且机器人会帮他们做大部分的工作，这样他们就有更多时间来放松。
There would probably be no schools on Mars. Every student would have a computer at home connected to an interplanetary network. They would study at online schools with "e-teachers".
火星上可能没有学校。每个学生家里都有一台电脑与星际网络连接。他们可以跟电子教师一起在网上学校学习。
Life on Mars would be interesting as well as challenging.
火星上的生活，不仅有挑战性，还很有趣。
