how to translate these two passages into chinese?

how to translate these two passages into chinese?
1.A man trying to see a single atom would be somewhat like a man trying to see a single drop of water in the ocean while flying many miles above it.He would see the results of a great many drops of water having come together.But he certainly would not be able to see a single drop of water.
2.There are many factors which contribute to the problem of road safety.Although cars legally must be fitted with seat belts,it is not compulsory to wear them.In spite of a great deal of publicity people still drive after drinking alcohol and the legislation on this is not sufficiently strong.A major factor in accidents is speed and there are obvious ways of limiting that.Lastly,one of the most serious problems is that the police and the courts are unable to enforce adequately current legislation.