like a cavern in size, shape, or atmosphere
(大小、形状或气氛)似大洞穴的
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a dismal cavernous hall .一个如洞穴般阴沉的大厅。
 
〈喻〉 大而深陷的
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his cavernous eyes .他那深陷的双眼。
 
"late Middle English:  from Old French