stalagmite

常見例句

When a drop lands, some of this mineral is deposited at the landing site, where it accumulates, forming a stalagmite.
當(dāng)水滴落地，其內(nèi)一部分溶解鈣碳酸鹽在地面存儲(chǔ)下來，日積月累，就慢慢形成了石筍。
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.
阿巴科島的一個(gè)深穴里，肯尼·布勞德正在向水面游去，水流把他吐出的氣泡壓了下去。他的胳膊下面還夾著一塊石筍。
Counting the layers is one way of assessing how old a stalagmite is. But radioactive dating provides a second, and sometimes more accurate, assessment.
而計(jì)算石筍的年輪只是測(cè)量其年齡的一種方法，放射性年代測(cè)定技術(shù)提供了另一種更為精確的方法。