求翻译：在20年后，家里有机器人为我们服务，学生不用上学，在家里计算机上学习，计算机上购物，不使用前，一切免费，没有污染，而且人们将货到两百岁是什么意思？

20 years later, the family have the robots to serve us, the students do not go to school, learning on the computer at home, shopping on the computer, do not use, all free, no pollution, and cargo to two hundred

After 20 years, have a family, and robot for our services, you don't have to go to school students on the computer at home on the computer learning, shopping, do not use a front, all for free, and there will be no pollution in the 200 -year-old

After 20 years, in the family has machine artificial us to serve, the student does not need to go to school, at home on the computer studies before, on the computer the shopping, does not use, all free, has not polluted, moreover the people will delivery 200 years old

After 20 years, home robot for us, students don't have to go to school, learning on the computer at home, shopping on your computer, you do not use front, all free, no pollution, and goods to 200

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