Speleothem
n. [地]洞穴堆积物(如钟乳石)
🗣️ 情景例句
The owners claimed Gemma?
主人把狗领回去了吗？
Car manufacturers are having a bad time.
汽车制造商的日子不好过。
Libraries made education possible, and education in its turn added to libraries: the growth of knowledge followed a kind of compound interest law, which was greatly enhanced by the invention of printing.
藏书使教育成为可能，而教育反过来又丰富了藏书，因为知识的增长遵循着一种“滚雪球”的规律。印刷术的发明又大大提高了知识增长的速度。