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n. 钡（一种化学元素）
n. 斗牛场
Bullarium is a term commonly applied to a collection of papal bulls and other analogous documents, whether the scope of the collection be general in character, or limited to the bulls connected to any particular order, or institution, or locality.
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。