英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Travertine的结果
Travertine
(n.)
A white concretionary form of calcium carbonate,
usually hard and semicrystalline. It is deposited from the water of
springs or streams holding lime in solution. Extensive deposits exist
at Tivoli, near Rome.