蹲班dūn∥bān留级{(of pupils, etc.) fail to advance to the next grade or year; stay down; repeat the year's work}: 全班学生没有一个～的{None of the students in the class failed to advance to the next grade.}|他去年蹲了一班,没有毕业。{He stayed down (or failed to pass) last year and did not graduate.}