Lead is rarely found free in nature; its major ore is the sulfide galena.

铅在自然界中很少呈游离态，主要存在硫化物和方铅矿中。

youdao

Lead is rarely found free in nature; its major ore is the sulfide galena.

铅在自然界中很少呈游离态，主要存在硫化物和方铅矿中。

youdao