In factories, workers use fire to melt metals to make things of different shapes.

在工厂里，工人们用火熔化金属，以制造各种形状的物品。

youdao

In factories, workers use fire to melt metals to make things of different shapes.

在工厂里，工人们用火熔化金属，以制造各种形状的物品。

youdao