classrooms教室
classroomn.教室;课堂
Classroom Building Fire教学楼火灾
classroom teaching case课堂教学案例
classroom air pollution教室空气污染
classroom demonstration课堂演示
classroom practice mode课堂式
classroom communication焦虑
classroom participation课堂参与
classroom conversations课堂英语会话
Classroom-based quest课堂设问
classroom studying team课堂学习团体