raw oil的用法和樣例：
例句
- The country exports lots of crude oil.
這個國家出口大量原油。 - "absolute principle, top priority"
硬道理 - The crude oil is chromatographed over silica gel.
粗製油狀物用硅膠進行色譜分離。 - The Coal liquefaction is the abbreviation of the coal chemical technology to produce industrial chemicals and liquid fuel with coal for raw material.
煤制油是以煤炭為原料生產液體燃料和化工原料的煤化工技術的簡稱。
