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Hypogeum or hypogaeum (plural hypogea) literally means "underground", from Greek hypo (under) and gaia (earth).James Stevens Curl (2006) A Dictionary of Architecture and Landscape Architecture It usually refers to an underground temple or tomb.
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。