A stalagmite is a long piece of rock which sticks up from the floor of a cave. Stalagmites are formed by the slow dropping of water containing the mineral lime.
英漢詞典釋義
n.
石筍
the form of stalagmites石筍的形成
英英詞典釋義
Noun
1. a cylinder of calcium carbonate projecting upward from the floor of a limestone cave