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頂蓋必須用焦油紙或塑料封閉.The pit cover should be sealed over with tar paper or plastic.扭扣可以用骨頭 、 木頭 、 玻璃或塑料制成.A button can be made of bone, wood, glass, or plastic.配金屬烙鐵座 ( 936A ) 或塑料烙鐵座 ( 936C ) 及高溫海棉.A sponge with a metal stand (...