今天手机已经成为我们生活中必不可少的一部分。对许多学生而言，他们把手机带到学校来，这让许多老师感到烦恼，因为学生们在他们传播知识的时候不听课。

Cell phone has been the indispensable part of our life today. For many students, they bring cell phone to school, which annoys many teachers, because the students are not listening to them when they are passing the knowledge. Actually, this situation can't all blame students and teachers have some duty. If they find the attractive way to show knowledge, surely students will focus their attention. It is not possible to ask students to hand in their cell phones, as they get used to using it. Most students will not play cell phone in the classroom, because they know their duty. For the students who can't focus their attention, even without cell phone, they still don't want to study. 
今天手机已经成为我们生活中必不可少的一部分。对许多学生而言，他们把手机带到学校来，这让许多老师感到烦恼，因为学生们在他们传播知识的时候不听课。实际上，这种情况不能都怪学生，教师也有责任。如果他们的教学方式更加吸引人，那么学生就会集中他们的注意力。不可能要求学生上交手机的，因为他们已经习惯了使用手机了。大多数学生不会在课堂上玩手机，因为他们知道他们的责任。而对于那些无法集中精力学习的学生，即使没有手机，他们也仍然不想学习。