So, for copper coin, less for a few strike, but also said there is no copper coin.
那么，换铜元，少换几个罢，又都说没有铜元。
Copper coin is made of Copper. It was produced in the Late Shang dynasty, and had been widely used for a long time.
用铜制作而成的钱币。商代晚期开始出现，并在接下来很长一段时间被人们使用。
When the copper coin drops into the water, there is a large explosion sound, reminiscent of the violence that accompanies our need for oil as energy.
当有硬币掉入水中，碗内会发出巨大的爆炸声，使我们回想起人类为争夺石油和能源而发动的暴行。
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