名词
中文翻译：石笋
同义词：
['stalactite', 'stalagmite例句：1. The stalactites and stalagmites in the cave are fascinating to watch.（洞穴中的石笋和石笋令人着迷。）']
例句：
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1. The stalactites and stalagmites in the cave are fascinating to watch.
洞穴中的石笋和石笋令人着迷。
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2.The stalactites and stalagmites were formed millions of years ago.
这些石笋和石笋是在数百万年前形成的。
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3. The stalactites and stalagmites provide a unique habitat for many species of insects.
这些石笋和石笋为许多昆虫提供了独特的栖息地。