1、
Some cooks love the natural mellow patina that develops when copper is exposed to and air.
当铜锅暴露在热和空气中,有些烹饪可能会产生铜绿.
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2、
I like this state. It'should be like this. The blade should not have rust or patina.
我喜欢这样的状态. 本来就应如此. 刃地本不应有锈和包浆的.
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3、
