The students were enrolled in a cram course to prepare for the national exam in a short period.
学生们参加了一个填鸭式课程，以在短时间内准备国家考试。
Many universities offer cram courses during summer breaks to help students catch up on missed credits.
许多大学在暑假期间提供填鸭式课程，以帮助学生补上错过的学分。