求翻译：往往教师的一束目光、一个手势，就能使某个学生或者整个班集体产生某种微妙的心理变化，形成某种心理状态，因而能有效地提高课堂言语交际的效果。是什么意思？

Often the teachers of a bunch of eyes, a gesture, you can make a student or entire class to collectively produce some kind of subtle psychological changes, the formation of some kind of mental state, which can effectively improve the effect of classroom verbal communication.

Often the teachers a beam eyes, a gesture, they could give a student or the entire class collectively produce a subtle psychological change, formation of a particular state of mind, so that it can effectively improve classroom speech communication.

Often teacher's bunch of vision, a hand signal, can cause some student or the entire class collective have some kind of subtle psychological change, forms some kind of psychology, thus can enhance the classroom spoken language human relations effectively the effect.

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