n (1)等级，级别，程度(particular level of rank or quality)[C]：salary～s工资级别;different/many～s of staff/officers 不同/许多等级的工作人员/军官;the highest～of goods/intelligence最高等级的货物/高级智力;reach the～of sergeant 达到中士的级别;high-/low-～civil servants/timber/materials 高/低级公务员/木材/材料;ordinary/second～ore/wind 普通级矿石/二级风;～A/I milk 甲级牛奶;〖同〗rank，class;

(2) 1)(学校的)评分等级，分数(mark(s)given for work at school)[C]：get good/excellent～s in one's exams 在考试中获得良好/优异成绩;get a～of B/seventy-nine on the spelling test 拼写测验得了B/79分;award～A 给打A级(分数);receive a failing～on the term paper学期论文不及格;〖同〗 mark; 2)(音乐等方面测试的)技巧等级(level of (esp musical) skill at which a pupil is tested)[C]：pass G～I in the music exam 在音乐考试中通过一级;get violin G～6 获得小提琴六级;

(3)年级 (class or year at school) [C]： (AmE)：be in the fifth～在五年级;enter the eighth～进入八年级;have a fifth-～education 接受五年级的教育;～school/teacher 小学/小学教师;

make the grade 成功，达到标准：make the～in the insurance business在保险业中获得成功;make the～as prime beef/a fashion model达到一级牛肉的标准/作为时装模特获得成功;

on the up/down grade 走上(下)坡;日益兴旺(越来越差)：(business)be on the down/up～(生意)日见衰败/日益兴隆;

v(1)给……分等级(类)(separate (a number of things) into groups according to rank，size，quality，or classes)[尤pass：T+n，T+n+prep (by/according to)，T+n+prep (from，to)，C+n+n]：～milk给牛奶分级;～students according to ability 根据能力把学生分类;Eggs are～d by/according to size/quality. 鸡蛋根据大小/质量分等级。Potatoes are～d from small to extra large. 土豆由小到特大分成等级。～peas into different groups 把豌豆分成不同的等级;〖同〗classify，sort，rank，order，value，rate，brand;

(2)给……评分(assign a grade to (a student's work);mark)[T+n，C+n+n](尤AmE)：～term papers/aural tests/children's essays 给学期论文/听力测验/孩子们的文章打分;The student is～d A.这个学生得了个A。〖同〗mark;

(3)降低(路面)坡度以使平坦(make a slope smoother or more level)[T+n]：～a road 把路修平;a nicely～d curve 筑得坡度很小的拐弯处;

(4)(颜色等)渐次变化((esp of colours)change gradually or in stages (from one colour into another))[I (from)(into)]：The colour of sky～s from yellow into orange. 天空的颜色由黄色逐渐变成橘红色。Blues and reds～into purple. 蓝色和红色融成了紫色。