dry copper

例句：

1. 1. The old house had a lotof dry copper pipes that needed to bereplaced.
   这所老房子有很多需要更换的干铜管。
2. 2. The old mine wasfilled with dry copper ore.
   旧矿场充满了干铜矿石。
3. 3. Theold car was made ofdry copper.
   那辆旧车是用干铜做的。