The spread of all educational theories and science knowledge of the school often must put in practice through the main channel of the practical class teaching.
学校的一切教育理论和科学知识的传播，往往都必须通过实际的课堂教学的主渠道来实施。
The spread of all educational theories and science knowledge of the school often must put in practice through the main channel of the practical class teaching.
学校的一切教育理论和科学知识的传播，往往都必须通过实际的课堂教学的主渠道来实施。
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