2 sentences

1. 废铁被投入炼钢炉中熔化。

   fèi​tiě bèi tóu​rù liàn​gāng lú zhōng róng​huà.

   Scrap iron was put into the steel furnace to melt.

   Source: Dong Chinese Dictionary

2. 锰是一种在炼钢过程中非常有用的金属。

   měng shì yī zhǒng zài liàn​gāng guò​chéng zhōng fēi​cháng yǒu​yòng de jīn​shǔ.

   Manganese is a very useful metal in the steelmaking process.

   Source: Dong Chinese Dictionary