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 .

当你漫步通过这些惊人的地下大厅时，允许你花上几小时对出奇明亮的钟乳石，石笋和其他岩层感到惊叹。

Avi gopher , of tel aviv university 's institute of archaeology , said testing of stalagmites , stalactites and other material found in a cave east of tel aviv indicates that eight teeth uncovered there could be the earliest traces so far of our species .

特拉维夫大学考古研究所的avigopher说，通过对位于特拉维夫东部的一个洞穴里的石笋、钟乳石以及其他物质的测试表明洞穴里发现的8颗牙齿可能是我们人类最早的遗迹。