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.
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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