中学教师承担着繁重的教育教学任务，有效地提高教育教学质量是他们的迫切要求。
The junior high school teachers undertake heavy education teaching mission, availably exaltation of education teaching quality is their urgent request.
警察战术是一门综合性、操作性、实战性很强的项目，搞好和实施警察战术教学与训练也是一项比较复杂的繁重任务。
Police tactics is a comprehensive, flexible and practical program. It is an arduous task to carry on police tactics teaching and training.
高校计算机中心承担着学校繁重的教学和科研任务，是高校实验教学的一个重要平台。
College computer center room carries out the heavy tasks of teaching and scientific research and it is also an important platform of experiment teaching.
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