等级的英文：
degree
rate

参考例句：

To determine the taxonomic classification of(an organism.
确定(有机体的)类别等级

rate lower; lower in value or esteem.
降低事物的等级；让事物的价值或声望下降。

We are in urgent need of these two grades.
我们现在急需这两种等级的货

Pirate Curfew: Increase order at the cost of some fear and anarchy.
宵禁令：能提升秩序等级但是造成恐惧和混乱等级的下降。

Their incomes are brought into a higher bracket.
他们的收入已进入一个较高的等级段。

Pressure rating to 250 PSI, vacuum to 28 Mercury.
压力等级为250PSI，真空下为28英寸汞柱。

Valves shall be manufactured from dezincification resistant brass or bronze rated 240 psi at 250°F.
阀门材质应该是抗失锌现象的黄铜或青铜,压力－温度等级为121℃,240psi。

Hotel is ranked in order of luxury in the guidebook .
指南手册中，饭店根据其豪华程度被划分成不同的等级。

Distribution voltage class capacitor banks can be connected in grounded wyes, ungrounded wyes or delta.
配电电压等级的电容器组可接成接地Y形、不接地Y型或△。

Recipients of military honors were called in order of precedence - highest ranking officers first.
军功章的获得者们被按级别高低召见─等级最高的官员排在第一位

degree是什么意思：
n. 阶层；度；学位；程度

(degree of)importance,seriousness or influence
重要性、严重性或影响力（的程度）

current amplification degree
电流放大率

These universities are entitled to grant degrees.
这些大学有权授予学位。

A thermometer calibrated in degrees Fahrenheit.
用华氏温度校准的温度计。

The unemployment rate will rise by degrees.
失业率将会渐渐增加。

rate是什么意思：
n. 比率，速率；费用
v. 评估；认为；划分等级；值得

cumulative rating
累积收听率

These bonds have an AAA rating.
这些债券的信用度是3A级的。

To rate too low;underestimate.
低估对…估价太低；低估

A Lump Sum Rate of ...
费用合计…

To reduce in rank or rating;demote.
使降级降低级别或降级；使人降级