求翻译：4000年后人们制造了数也数不清的机器人。这些机器人各有所能，有的负责医治病人病畜，有的负责照看婴孩，有的负责指挥交通，有的负责……这样一来那些懒虫们便不需要干活了。人们还将机器人的程序都变成善良的，并永远无法更改。是什么意思？

4,000 years later people created a robot can not count. Each of these robots can, and some are responsible for treating patients with sick animals, and some are responsible to take care of the baby, and some are responsible for directing traffic, some for ... As a result of those slackers who do not

After 4000 it is created that's robot. These robots each have a responsibility to heal the sick, sick animals, have the responsibility for the care of the baby, there is responsible for directing traffic, there is the responsible ... it is a lazy to those who do not have to work. He will also be the

After 4000 the people have made the number also innumerable robot.These robots have respectively energy, some are responsible to treat the patient to get sick the livestock, some looks after the baby responsibly, some are responsible to direct the traffic, some are responsible ......As the matter st

After 4,000 people has created a number of countless robots. These robots, is responsible for the medical patient, responsible for looking after the baby, is responsible for directing traffic, and some charge of sth The Slacker who does not need to work. People will have become a kind of robot progr