stalagmite

常见例句

When a drop lands, some of this mineral is deposited at the landing site, where it accumulates, forming a stalagmite.
当水滴落地，其内一部分溶解钙碳酸盐在地面存储下来，日积月累，就慢慢形成了石笋。
His air bubbles forced down by the current in a blue hole on Abaco, Kenny Broad fights to the surface, a stalagmite under his arm.
阿巴科岛的一个深穴里，肯尼·布劳德正在向水面游去，水流把他吐出的气泡压了下去。他的胳膊下面还夹着一块石笋。
Counting the layers is one way of assessing how old a stalagmite is. But radioactive dating provides a second, and sometimes more accurate, assessment.
而计算石笋的年轮只是测量其年龄的一种方法，放射性年代测定技术提供了另一种更为精确的方法。