grade例句
The boy first showed promise as an athlete in
grade school.
这个男孩在上小学的时候就初次显示出成为运动员的潜力。
South Point College does not
grade the students' work.
南点学院不对学生的作业评分。
It was actually used for enriching uranium to weapons-
grade levels.
实际上，它是用来将铀浓缩以制造武器。