It already has the outside's requests to teachers, also has the teacher himself self-pursuit and this all is decided by the discipline particularity of this subject.

其中既有外界对教师的要求，也有教师本身的自我追求和需求，这都是由语文这一学科的特殊性决定的。

youdao

Some ten days later, when my brother, all by himself, was practicing a minute-long continuous sound, the music teacher made an unexpected appearance.

NPR: Literature and Lullabies from the 'Axis of Evil'