tuff
n. 凝灰岩
形容词：tuffaceous
近义词：tufa，
英英释义
Noun
- hard volcanic rock composed of compacted volcanic ash
例句
用作名词(n.)
- The light-colored tuff can be used to produce cement.淡色凝灰岩可以用来制造水泥。
- This kind of rock is called tuff.这里的岩质是凝灰岩。