Audio-visual animation is an effective means of teaching in multimedia-assisted biochemistry teaching. 影音动画是生物化学多媒体教学中一个有效的教学手段。
The homeworks are a pedagogic means of ensuring some uniformity in achieving the learning objectives across the class that would not be guaranteed by the projects alone. 课后作业是教学手段，确保全体学生大概一致达成学习目标，单靠专题不担保。
