mainstream product的用法和樣例：
例句
- Finally,it indicated that the green colliery machinery will become the mainstream of colliery machniery.
最後提出綠色煤礦機械產品將會成為煤礦機械的主流產品。 - He predicts the product will compete with such mainstream offerings as polyvinylidene chloride, polyethylene and polypropylene.
他預測，該產品將與這種主流產品，聚偏二氯乙烯，聚乙烯和聚丙烯。
