翻译短文

翻译短文
Li Ping usually goes to school on his bike.He puts it in the bike-stand outside the school.There are many bikes there in the daytime.At 5:30 in the afternoon,the students take their bikes and ride home.Then many streets are full of young riders on two wheels!The streets are busy.Sometimes a policeman stops them all to let the cars go on.Sometimes he stops all the cars to let the bikes pass.Some students carry heavy bags of books with them.Sometimes two boys ride on one bike.The police always stops a bike if it is with two people.