1
the refining of [material]
表示对某材料进行精炼的过程。
The refining of crude oil is a complex process.
原油的精炼是一个复杂的过程。
精炼，提纯
refinings — plural of refining
先理解核心含义，再看它在真实句子里的用法。
精炼，提纯
the process of removing impurities (as from oil or metals or sugar etc.)
The refining of crude oil is a complex process.
原油的精炼是一个复杂的过程。
提炼；精炼
Refinement (process of refining)
The refining of crude oil produces gasoline.
原油的精炼产生汽油。
They are refining the gold to remove impurities.
他们正在提纯黄金以去除杂质。
The company specializes in metal refining.
这家公司专门从事金属精炼。
表示对某材料进行精炼的过程。
The refining of crude oil is a complex process.
原油的精炼是一个复杂的过程。
作为复合名词，表示精炼某种材料。
Oil refining requires high temperatures.
石油精炼需要高温。
Not this
The process involves a refining of crude oil.
Use this
The process involves refining of crude oil.
Refining 作为不可数名词，通常不加不定冠词 'a'。正确用法中，'refining' 前不加冠词，表示泛指的提纯过程。
Not this
After several refinings, the metal becomes pure.
Use this
After several rounds of refining, the metal becomes pure.
Refining 是不可数名词，没有复数形式。应使用 'rounds of refining' 或 'refinement steps' 来表示多次提纯。
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指精炼或提纯的过程，通常不可数
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.