If the network fluctuations are very large, the experience of students and teachers will be very poor, and students will even lose their interest in learning, causing students to do other things in the classroom.
If the network fluctuates very much, then the students and teachers experience very poor class, students may even lose interest in learning, resulting in students doing other things in the classroom.
If the network fluctuation is very large, the experience of students and teachers will be very poor, and students will even lose interest in learning, resulting in students doing other things in the classroom