冶炼铜

blister copper───[材]粗铜；[冶]泡铜

melted butter───溶化牛油；溶化奶油；黄油溶液

blister coppers───[材]粗铜；[冶]泡铜

belted course───[建]带状层；束带层，带层

betel pepper───蒟酱

black copper───粗铜

eyedropper───n.点眼药器；眼药水滴管

Famous for its superiority in quality and abundance in quantity, Danyang copper was on a large scale mined and smelted in the Han Dynasty.───皖南地区铜矿资源丰富，两汉时期的皖南属于丹阳郡，丹阳铜以质优量多而闻名全国。