麻烦翻译一下,不要拿翻译器忽悠我,

麻烦翻译一下,不要拿翻译器忽悠我,
Are you carrying too much on your back at school?I'm sure lots of children of your age will,say“Yes”．Not only the students in China have this problem ,but children in the United States also have heavy school bags．
Doctors are starting to worry that younger and younger students are having back and neck problems as a result of schools bags being too heavy for them．
“It's hard for me to go upstairs with my bag because it's so heavy,”said Rick Hammond,an 11-year-old student in the US．
Rick is among students who have common school bags with two straps to carry them,but many other students choose rolling bags．
But even with rolling bags,getting up stairs and buses is still a problem for children．Many of them have hurt their backs and necks because of the heavy school bags．
But how much is too much?Doctors say students should carry no more than 10％ to 15％ of their own body weight．
Scott Bautch,a back doctor,said children under Grade 4 should stay with 10％．But it is also important that older children don't stay with over 15％,because their bodies are still growing．“Children are losing their balance and falling down with their school bags．”he said．
Parents and teachers are starting to tell children to only take home books they will be reading that night．Some teachers are using pieces of paper or thin workbooks for students to take home．One of the best answers is,as some children said,to have no homework at all!

倘若问你,你上学感觉背上的负担重么?大部分还在上学的孩子的回答一定是：“是的”.但是,这种现象不仅仅出现在中国,同样,美国的孩子们也面临着沉重的背上负担.
医生们日渐担忧年轻人和小学生正负担着由沉重书包造成的背部和颈部的各种问题.十一岁的美国学生里克 哈蒙德说,“我背着包的时候上楼梯都难,因为它太重了.”
里克像其他孩子一样,背着普通的双肩包,但是一些其他的学生已经开始带着拉杆轮书包上学了.
然而,即便是带轮子的拉杆书包,上楼和公车对于孩子们而言依然是个问题.大部分孩子都因这些沉重的包袱而造成了背部和颈部的问题.
但是多少才算是多呢?医生认为,超过学生们所承担的重量不应该超过他们体重的10%-15%.
Scott Bautch是一个背部的专门医生,他认为,小学四年级以下的小学生应当背小于其体重10%的书包.但是对于高年级的学生而言,因为他们任然在生长,所以书包重量也不应该超过其体重的15%.
家长和老师开始告诉孩子们只带回家会看的书本,有些老师甚至开始使用页数少的或更薄的书本来让学生带回家.然而,如一些孩子们说的,最好是什么作业也没有.