They set down the palanquin and knocked three times with a copper hammer.

他们放下轿子，以一柄铜锤敲了三次门。

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I have a question that whether this copper hammer in pics is the golden hammer used by guard?

看到制式锤我有个问题：图中的铜锤是否就是侍卫用的金瓜？

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Hammer copper into POTS and pans.

把铜板锻造成罐子和盆子。

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