poor graded meaning in English

级配不良的

They balanced my poor grades in these other classes .
这样就扯平了其他课程的坏分数。
That ' s why you ' re getting such poor grades
这就是为什么你成绩糟糕的原因吗？
No . i ' m sorry to say that i made very poor grades during my first year of college
没有。我很遗憾地说，我大学第一年的成绩非常糟糕。
She starts making poor grades . declining grades and frequent withdrawals from courses may indicate that your child ' s focus is somewhere other than classes
他的成绩开始下滑。成绩下滑和频繁的逃课预示着你孩子正关心课堂之外的其他东西。