At the moment, it may be difficult to imagine, but: many people believe that, by the year 2100, we will live on Mars.
目前，可能很难想象，但许多人相信，到2100年，我们将生活在火星上。
Our own planet, Earth, is becoming more and more crowded and polluted.
我们的星球——地球，正变得越来越拥挤和污染严重。
Luckily, we can start again and build a better world on Mars.
幸运的是，我们可以重新开始，在火星上建立一个更好的世界。
Here is what life could be like.
以下是生活可能的样子。
First of all, transport should be much better.
首先，交通应该会更好。
At present, our spaceships are too slow to carry large numbers of people to Mars - it takes months.
目前，我们的宇宙飞船速度太慢，无法把大量人类送到火星——这需要几个月的时间。
However, by 2100, spaceships can travel at half the speed of light.
然而，到2100年，宇宙飞船的速度可以达到光速的一半。
It might take us two or three days to get to Mars!
我们可能只需要两三天就能到达火星！
Secondly, humans need food, water and air to live on,
其次，人类需要食物、水和空气才能生存，
Scientists should be able to develop plants that can be grown on Mars.
科学家应该能够开发出可以在火星上种植的植物。
These plants will produce the food and air that we need.
这些植物将提供我们所需的食物和空气。
However, can these plants produce water for us?
但是，这些植物能为我们提供水吗？
There is no answer now.
目前没有答案。
There is a problem for us to live on Mars.
我们在火星上生活面临一个问题。
Mars pulls us much less than the Earth does.
火星的引力比地球小得多。
This will be dangerous because we can easily jump too high and fly slowly away into space.
这将非常危险，因为我们很容易跳得太高，慢慢飞向太空。
To prevent this, humans on Mars have to wear special shoes to make themselves heavier.
为了防止这种情况，火星上的人类必须穿特殊的鞋子，以增加体重。
Life on Mars will be better than that on the Earth in many ways,
在许多方面，火星上的生活将比地球上的生活更好，
People will have more space.
人们将有更多的空间。
Living in a large building with only 10 bedrooms is highly possible.
住在一栋只有10个卧室的大楼里是非常可能的。
Many people believe that robots will do most of our work, so we have more time for our hobbies.
许多人相信，机器人将承担我们大部分的工作，这样我们就有更多的时间来做自己的兴趣爱好。
There will probably be no school on Mars.
火星上可能没有学校。
Every student will have a computer at home which is connected to the Internet.
每个学生都会在家里拥有一台连接互联网的电脑。
They can study, do their homework and take exams in online schools.
他们可以在网上学校学习、做作业和参加考试。
Each student will also have their own online teacher called “e-teacher".
每个学生还将拥有自己的在线老师，称为“电子教师”。
However, in some ways, life on Mars may not be better than that on the Earth today.
然而，在某些方面，火星上的生活可能不比今天地球上的生活更好。
Food will not be the same - meals will probably be in the form of pills and will not be as delicious as they are today.
食物将不再一样——餐点可能以药丸的形式存在，而且不如今天那么美味。
Also, space travel will make many people feel ill.
此外，太空旅行会让许多人感到不适。
The spaceship will travel fast but the journey to Mars will probably be very uncomfortable.
宇宙飞船将以很快的速度旅行，但前往火星的旅程可能会非常不舒服。
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At the moment, it may be difficult to imagine, but: many people believe that, by the year 2100, we will live on Mars. Our own planet, Earth, is becoming more and more crowded and polluted. Luckily, we can start again and build a better world on Mars. Here is what life could be like.
First of all, transport should be much better. At present, our spaceships are too slow to carry large numbers of people to Mars - it takes months. However, by 2100, spaceships can travel at half the speed of light. It might take us two or three days to get to Mars!
Secondly, humans need food, water and air to live on, Scientists should be able to develop plants that can be grown on Mars. These plants will produce the food and air that we need. However, can these plants produce water for us? There is no answer now.
There is a problem for us to live on Mars. Mars pulls us much less than the Earth does. This will be dangerous because we can easily jump too high and fly slowly away into space. To prevent this, human审s on Mars have to wear special shoes to make themselves heavier.
Life on Mars will be better than that on the Earth in many ways, People will have more space. Living in a large building with only 10 bedrooms is highly possible. Many people believe that robots will do most of our work, so we have more time for our hobbies.
There will probably be no school on Mars. Every student will have a computer at home which is connected to the Internet. They can study, do their homework and take exams in online schools.Each student will also have their own online teacher called “e-teacher".
However, in some ways, life on Mars may not be better than that on the Earth today. Food will not be the same - meals will probably be in the form of pills and will not be as delicious as they are today. Also, space travel will make many people feel ill.The spaceship will travel fast but the journey to Mars will probably be very uncomfortable.