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
Tufa的结果
Tufa
A soft or porous stone formed by depositions from water,
usually calcareous; -- called also calcareous tufa.
Tufa
A friable volcanic rock or conglomerate, formed of consolidated
cinders, or scoria.