柯林斯词典barium /ˈbɛərɪəm/ 1. N-UNCOUNT Barium is a soft, silvery-white metal. 鋇 返回 barium剑桥词典a chemical element that is a soft , silver-white metal , is alkaline, and combines with oxygen very easily 鋇（一種質軟的銀白色金屬元素，堿性、易氧化） 返回 barium