Part-time foreign teachers are generally charged according to the class, so the cost is low, it is suitable for small training institutions.

兼职外教一般是按课时收费的，所以成本较低，很适合小型的培训机构。

youdao

All the bilingual teachers and foreign teachers took their weekly meeting time to participate in the demo class to actively think about the teaching contents and be the member of the class.

双语和外教老师则利用每周的例会时间全员出席公开课，积极地思考教学内容，热情地参与到教学过程中。

youdao

Besides the limited class teaching hours, it is hard for foreign language teachers to fulfil their teaching task within the specified time.

再加上有限的课堂教学时间，外语教师们在规定时间内很难完成教学任务。

youdao