Speleothem
n. [地]洞穴堆积物(如钟乳石)
🗣️ 情景例句
Good. Tell Mr. Gao at the factory to keep up the good work.
很好，请告诉工厂的高先生继续努力。
No one can call back yesterday;Yesterday will not be called again.
昨日不复来。
its movement would be recorded in ink upon its surface.
纸的表面就会用墨水记录下地板运动的情况。