or they waste more time and energy on social network like facebook disadvantages obviously,many people use computers without positive thinking . chúng ta làm việc nhiều giờ với máy tính sẽ gây tổn thương mắt ví dụ như
or they waste more time and energy on social network like facebookdisadvantagesObviously, many people use computers without positive thinking.We work long hours with the computer will cause eye damagefor example the