make the grade

汉语翻译

例句：

1. He tried several times to enlist, but first he was too young, then too thin, to make the grade.
   他几次报名应征，但都不合标准，先是由于年纪太小，而后又由于长得太瘦。
2. It saddened her that her son couldn't make the grade in medical school.
   她的儿子在医学院成绩不好使她很伤心。