三小时的课分成四节，每节45分钟。
The three-hour class is divided into four blocks of 45 minutes each.
我讨厌周六上三小时的中文课。
I hated spending my Saturdays in a three-hour Chinese class.
他们给了我三小时历史课的学分。
本门课程的内容包括了36堂课、十次作业、上课时间三次测验，以及一个三小时的期末考。
There will be 36 lectures, 10 problem sets, 3 exams during regular lecture hours, and a 3-hour final.
本门课程的内容包括了36堂课、十次作业、上课时间三次测验，以及一个三小时的期末考。
There will be 36 lectures, 10 problem sets, 3 exams during regular lecture hours, and a 3-hour final.
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