fail to go up to the next grade [year];repeat the year's work;stay down;retardation ;

Undertrained, overstretched teachers know no other way of controlling their classrooms.
每年用于留级的费用达130亿雷亚尔,几乎占基础教育费用的五分之一.
来源:互联网摘选Naturally, I repeat and again went over the three-year life, it is a little injustice.
自然我留级了,重新过了一遍三年级生活, 实在有点冤.
来源:互联网摘选Haas was afraid that if he failed his examinations again, he would be kept down next year.
哈斯担心他如果再考不及格, 下一年就得留级了.
来源:《简明英汉词典》And if they pass, they even get credit and avoid being left back a grade.
而当他们通过了这些课程时, 他们甚至还能得到学分以免留级.
来源:互联网摘选
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