1. Kerosene is a by-product of petroleum refining.
    煤油是提炼石油的副产品。

1. 副产品：最好的原料当然就是肉(Meat),再来是肉粉(Meal),肉类副产品(by product)则是不应该精华、浓缩肉类蛋白等等,看似优质其实不然,都只是肉粉(Meal)的美化用语罢了,甚至是肉类副产品(by product)的恶意掩饰.

2. 副产物：by pit 辅助竖井 | by product 副产物 | by work 辅助工作

3. by-product

3. 付产品：产品 product. | 付产品 by-product. | 中间产品 intermediate.

4. 付产物：by pass 旁路 | by product 付产物 | by product precipitation 副产品沉淀

1. 副产品
    A by-product is something which is produced during the manufacture or processing of another product.

    e.g. The raw material for the tyre is a by-product of petrol refining.
           制造轮胎的原材料是提炼汽油时产生的一种副产品。

2. 附带产生的结果
    Something that is a by-product of an event or situation happens as a result of it, although it is usually not expected or planned.

    e.g. A by-product of their meeting was the release of these fourteen men.
           他们会见的意外成果是释放了这14个人。

1. a product made during the manufacture of something else

    Synonym: byproductspin-off

2. a secondary and sometimes unexpected consequence

    Synonym: byproduct