1 sentence

1. 这家工厂专门负责回收铜、铝等各种有色金属。

   zhè jiā gōng​chǎng zhuān​mén fù​zé huí​shōu tóng, lǚ děng gè zhǒng yǒu​sè​jīn​shǔ.

   This factory specializes in recycling various non-ferrous metals such as copper and aluminum.

   Source: Dong Chinese Dictionary