grade是什么意思|grade的音标|grade的用法-英文词典频道-汉语字典

中文词源

grade 等级，年级

来自PIE*ghredh, 走，台阶，层级，词源同ingress, aggressive.后词义通用化，年级。

grade (n.): 1510s, "degree of measurement," from French grade "grade, degree" (16c.), from Latin gradus "step, pace, gait, walk; step on a ladder or stair;" figuratively "a step, stage, degree," from gradi (past participle gressus) "to walk, step, go," from PIE *ghredh- "to walk, go" (cognates: Lithuanian gridiju "to go, wander," Old Church Slavonic gredo "to come," Old Irish in-greinn "he pursues," and second element in congress, progress, etc.). Replaced Middle English gree "step, degree in a series," from Old French grei "step," from Latin gradus.

Meaning "inclination of a road or railroad" is from 1811. Meaning "class of things having the same quality or value" is from 1807; meaning "division of a school curriculum equivalent to one year" is from 1835; that of "letter-mark indicating assessment of a student's work" is from 1886 (earlier used of numerical grades). Grade A "top quality, fit for human consumption" (originally of milk) is from a U.S. system instituted in 1912. To figuratively make the grade "be successful" is from 1912; early examples do not make clear whether the literal grade in mind was one of elevation, quality, or scholarship.
grade (v.): 1650s, "to arrange in grades," from grade (n.). Meaning "to reduce (a road, etc.) to a level or degree of inclination" is from 1835. Meaning "assign a letter mark to" is from 1931. Related: Graded; grading.

1. 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。

3. 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。

5. All parts are machined from top grade, high tensile aluminium.: 所有零件都是用顶级高强度铝加工而成。