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A triforium is a shallow arched gallery within the thickness of inner wall, which stands above the nave of a church or cathedral. It may occur at the level of the clerestory windows, or it may be located as a separate level below the clerestory.
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。