求翻译：如果他上课玩手机，他的成绩就会下降。父母和老师会对他失望。上课带手机还会有很多很多坏处。一个学生上学不应该带手机。是什么意思？

If the phone to play his class, his performance will drop. Parents and teachers will have disappointed him. Class with a cell phone there will be many, many disadvantages. A student should not bring cell phones to school.

If he was playing with mobile phones during class, his performance will decline. Parents and teachers will be disappointment in him. Cell phones will also attend classes there are many, many disadvantages. One of the students attending school should not carry mobile phones.

If he attends class plays the handset, his result can drop.The parents and teacher can be disappointed to him.Attends class the belt handset also to be able to have very many very many faults.A student goes to school should not bring the handset.

If he played for class mobile phone, his performance will fall. Parents and teachers will be disappointing to him. Class cell phone there will be many, many disadvantages. A students should not take cell phone.

If he played for class mobile phone, his performance will fall. Parents and teachers will be disappointing to him. Class cell phone there will be many, many disadvantages. A students should not take cell phone.