... 石笋的stalagmitic 石笋状的stalagmitic 石胎lithopedion ...
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潘诺博士和他的研究小组从研究石笋入手，石笋是生长在石灰洞地面上的圆锥状突出物。
Dr Panno and his team found their recording angel in the form of stalagmites, the conical projections that grow on the floors of limestone caves.
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