Read Edit View history 炼油 liànyóu oil refining Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 炼油/煉油 · liànyóu · oil refining 2026/03/04 炼油 / 煉油 liànyóu oil refining oil refining; to refine oil 这座城市以其先进的炼油技术而闻名。 verb created sense Mar 4, 2026, 02:25 AM