Copper
铜
What is the most useful metal?
最有用的金属是哪个？
Copper is one of the most useful metals in people's lives.
铜是人们生活中最有用的一种金属GnEvU+b0I8UD7DWhvM+。
Copper is found everywhere.
铜无处不在9Gz9RDPHSO。
It delivers electricity very quickly, so every wire is made of copper.
它能非常快速地传导电流，因此电线都是由铜制成的gX#aE4+Xr&Q#%o&-。

Bullets, irons, electric stoves and pots also contain copper.
子弹、铁、电炉和罐子里都含铜&*)Dt#e%L]*vWjRl+)E。
Copper is not as expensive as silver or gold.
铜不像银或金那样昂贵TOJ%tKH4yLR。
People make cheap accessories using copper.
人们用铜来制作廉价的饰品nZ-EAmmN^H#。
Because it has a beautiful color.
因为铜有美丽的颜色(^aux%-D9!K3(+|kD(P_。
Copper is sometimes used to cover the surface of buildings.
所以有时会把它镀在建筑物的表面uafe~MbXVZV。
Do you know that copper is the first metal people used in history?
你知道铜是人类历史上使用的第一种金属吗？