留级:
英语词典中是这样解释的 (of pupils,etc) fail to go up to the next grade (year);repeat the year's work;
正式表达中 可以用retardation
交流中相关表达有:
study in the same grade;
repeat the year's work;
remain in the same grade;
to stay down;
留级生的表达是 detained student
辍学:discontinue one's studies 动词词组是 drop out
相关表达:
For teenagers, pregnancies, alcoholism, drugs and dropouts are all part of the same sad resume.
怀孕、酗酒、吸毒和辍学是许多青少年悲惨的***同经历。