However, due to the limitations of professional teaching concepts, teaching mechanisms, class hours allocation and other factors, it is often difficult to have measures to deal with
However, limited by many factors such as professional teaching concept, teaching mechanism, class-time allocation, and so on, it is often difficult to have measures to deal with
However, due to the limitations of professional teaching concept, teaching mechanism, class hour distribution and many other factors, it is difficult to take measures to deal with them<br>