grade /ɡreid/ I. n.［c］年级，等级；成绩：school grades 学校成绩I’m in the third grade/grade 3. Which/What grade are you in?我读三年级，你读几年级? The jewels are of the highest grade.这些珠宝是最上等的。Milk is sold in grades. 牛奶分等级出售。‖II.v.分等级：be graded according to size and quality 根据大小和质量分等级