一个教授和二十名到三十名学生每周上课两三次，每次授课时间45到50分钟。这是大学课堂教学的传统方式。
Eg. Traditionally classes at college level bring the professor and a group of 20 to 30 students together for a 45-to-50-minute class two or three times a week.
针对工科专业课教学特点，为提高课堂教学质量，在备课时，应制作多媒体课件，优化教学内容，选用适用教材，及时更新讲课内容；
For improving the classroom teaching quality, it is requires to program multimedia courseware, optimize and update teaching contents, and select proper textbook during preparing for lessons.
由一个教授和十名学生每周会晤两三次，每次授课时间45到50分钟，是大学程度课堂教学的传统方式。
The traditional pattern of classroom experience at the college level brings the professor and a group of 20 to 30 students together for a 45-to-50-minute class session two or three times a week.
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