Water that falls onto the ground below from the growing stalactite can form stalagmites .
正在生长的钟乳石上的水,落到地面上后可以形成“石笋”。
Like trees , stalagmites are often composed of concentric layers that represent annual growth periods .
同树木一样,石笋通常也有能显示其年生长周期的年轮。
Dr panno and his team found their recording angel in the form of stalagmites ......
可以改进为:潘诺博士和他的研究小组在石笋上发现了他们所期望的蛛丝马迹。
Allow a couple of hours to marvel at the eerily-lit stalactites , stalagmites and other rock formations as you wander through these amazing subterranean halls .