1. Coprecipitation is a method used in chemistry to separate and purify substances from a solution by causing them to form a solid precipitate together.
共沉淀是一种在化学中用来从溶液中分离和纯化物质的方法，通过使它们一起形成固体沉淀。

2. The coprecipitation of impurities with the desired product can affect the purity of the final product.
杂质与所需产品的共沉淀可以影响最终产品的纯度。