{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/7\/71\/Clean-Copper-Step-3.jpg\/v4-460px-Clean-Copper-Step-3.jpg","bigUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/7\/71\/Clean-Copper-Step-3.jpg\/v4-760px-Clean-Copper-Step-3.jpg","smallWidth":460,"smallHeight":306,"bigWidth":760,"bigHeight":505.27472527472526}3冲洗铜器。{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/4\/4e\/Clean-Copper-Step-6.jpg\/v4-460px-Clean-Copper-Step-6.jpg","bigUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/4\/4e\/Clean-Copper-Step-6.jpg\/v4-760px-Clean-Copper-Step-6.jpg","smallWidth":460,"smallHeight":306,"bigWidth":760,"bigHeight":505.27472527472526}2将铜器放入锅(大的器皿)中。