这栋老房子仍然保留着它原来的铜管。

The old house still has its original ___copper pipes.

她铜色的头发在人群中很显眼。

Her ___copper hair stood out in the crowd.

教堂的圆顶由铜制成，随着时间的推移已经变成了绿色。

The church's dome is made of ___copper and has turned green with age.