Pupils with 90% or more are awarded Grade A.
满90分的学生评为甲等.
Scientists have been trying to find methods of grading up cattle to provide better meat for the market.
科学家们一直在想法子提高牲畜的质量以向市场提供更好的肉食。
A numerical unit of academic achievement equal to a letter grade.
分数学业成绩的数字形式的单位,等于用字母表示的等级