翻译英语小短文!Human beings have used tools for a very long time. I

翻译英语小短文!
Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone against another. In this way, they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Human beings needed to use tools because they did not have sharp teeth like other meateating animals, such as lions and tigers. Tools helped people to get food more easily. ?
Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. The stone chip was one of the first tools that people used, and perhaps it is
the most important. Some scientists say that it was the key to success of mankind.?
Since 1960 a new kind of tool has appeared. This is the silicon chip—a little chip of silicon crystal. It is smaller than a finger?nail, but it can store more than a million “bits” of information. It is an electronic brain.Every year these chips get cleverer, but their size gets smaller, and their cost gets less. They are used in watches, calculators and intelligent machines that we can use in many ways.?
In the future we will not need to work with tools in the old way. Machines will do everything for us. They will even talk and play games with us. People will have plenty of spare time. But what will they do with it?
Human beings used stone chips for more than two million years, but human life changed very little in that time. We have used silicon chips for only a few years, but life is changing faster every day. What will life be like twenty years from now? What will the world be like two million years from now?

人类使用工具已经有了很长时间.现在在世界上的很多地方你还可以发现两百多万年前的人们使用的工具.通过石头的互相碰撞来制造这些工具.这样一来,吧其中的一块石头粉碎成一块一块的.这些石块边缘一般都很锋利.人们用这些锋利的石块切肉,剥捕来的死动物的皮.也用来加工木制工具.人类之所以要制造工具是因为他们没有用油其他食肉动物像狮子老虎那样锋利的牙齿.工具使得人们更容易地获取食物.
使用工具劳动同样地也能开发人类的智力.人们的大脑变的越来越聪明了,人们开始发明更多的工具是机器.石块是人们最早使用过的工具之一,也可以说是最重要的工具.一些科学家解释道：“这个也是人们成功的关键. 20世纪60年代以后就出现了一种新新的工具.这就是硅芯片-一种用硅晶体制成的芯片.他比人的一个手指甲还小,但是她能够存储上百万字节的信息.他是一种电子计算机.这些芯片的成本越来越低,面积越来越小,而越来越 “聪明”.他们可以用在很多方面,比如手表,计算器,智能电脑.
在将来,我们将不需要用现在这种的方式去使用工具了.机器将会为我们做一切.甚至可以和我们谈话和玩游戏.这样,人们就有了很多的空余时间.但是又有问题出现了,人们怎么处理这些空余时间呢?
人类使用石块有了2百万多年,而在那时人们的生活并没有什么特别的变化.我们已经使用硅芯片没几年,但是我们的生活却每天都在发生迅速的变化.20年后的生活将会变成什么样呢?2百万年后人们的生活又会成什么样呢?
没有用机器~~~^_^