by-product的例句（by-product在句子中的用法）

• 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。
• 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。
• The packaging must provide an effective barrier to prevent contamination of the product. 包装必须提供有效的保护，以免产品受污染。