1
a gradation of sth
gradation of 后接名词，表示由一系列层次或阶段构成的渐变过程。
The painting shows a subtle gradation of light and shadow.
这幅画呈现出光与影的细微渐变。
等级；级别；级次
gradations — plural of gradation
先理解核心含义，再看它在真实句子里的用法。
等级；级别；级次
a stage or level in a graded series
The painting shows a subtle gradation of light and shadow.
这幅画呈现出光与影的细微渐变。
A sequence of gradual, successive stages; a systematic progression.
等级；阶段
relative position in a graded series
A passing by small degrees from one tone or shade, as of color, to another.
元音交替中的一级
a degree of ablaut
The artist used subtle gradations of gray to create depth in the painting.
这位艺术家用细微的灰色渐变在画作中营造出深度。
AI contextual example
Prices are set according to a gradation of quality, so better materials cost more.
价格按照质量等级来设定，因此更好的材料价格更高。
AI contextual example
The test includes a gradation of questions from basic to advanced.
这项测试包含从基础到高级的梯度问题。
AI contextual example
subtle gradations in color
色彩中微妙的渐变。
WordNet
gradation of 后接名词，表示由一系列层次或阶段构成的渐变过程。
The painting shows a subtle gradation of light and shadow.
这幅画呈现出光与影的细微渐变。
gradation in 用于说明渐变或等级所在的具体方面，后常接抽象名词。
The exercises are arranged with a clear gradation in difficulty.
这些练习按照难度明确分级排列。
in gradations 作状语，表示“按等级、逐级地”，gradations 常用复数。
The color changes in almost imperceptible gradations.
颜色以几乎难以察觉的层次逐渐变化。
Not this
The graduation from dark blue to light blue is perfectly smooth.
Use this
The gradation from dark blue to light blue is perfectly smooth.
句意是“从深蓝到浅蓝的逐渐变化”，应用 gradation；graduation 主要表示“毕业”或“刻度标记”，不能表达这种颜色或层次的渐变过程。
Not this
There are many gradation of blue in this chart.
Use this
There are many gradations of blue in this chart.
gradation 是可数名词，表示“一个等级或阶段”；在 many 后面必须用复数形式 gradations。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
细微的渐变；细微的等级差别
The painting shows subtle gradations of light and shadow.
这幅画展现了光影的细微渐变。
颜色的渐变
The sky displayed a beautiful gradation of color from pink to deep blue.
天空呈现出从粉红到深蓝的色彩渐变。
意义的细微差别
The translator carefully captured the gradations of meaning in the original text.
译者仔细捕捉了原文中意义的细微差别。
社会等级差别
The novel explores the social gradations of Victorian England.
这部小说探讨了维多利亚时代英国的社会等级差别。
尺寸上的分级
The samples are arranged in gradation in size from smallest to largest.
这些样本按尺寸从小到大分级排列。
Use gradations naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记作：grad像grade（等级），-ation表过程；想象台阶逐级上升，即逐渐分等级、有顺序的变化。
语域：formal 常见场景：学术写作、艺术与设计、技术说明 gradation 多用于正式或书面语境，表示按程度或等级排列中的某一级；日常口语中较少见，比较常见于学术、艺术或技术分析中。
这些词与 gradation 一样以 -ation 结尾，词尾读音都是 /eɪʃən/，因此押韵（如 nation /ˈneɪʃən/、relation /rɪˈleɪʃən/、vacation /veɪˈkeɪʃən/）。注意拼写相似的 ration 读音是 /ˈræʃən/，并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.