单词：caldera
caldera的用法和样例：
例句
- The mountain is encircled by the doughnut-shaped depression of the caldera.山为环形的破火山口洼地环抱着。
- Much of Yellowstone National Park is a giant collapsed volcano, or a caldera.黄石国家公园的大部分地方是一座坍塌的大火山，或是一个喷火山口。
词汇搭配
- caldera lake巨火山口湖,火口湖...
- erosion caldera侵蚀巨火山口...
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These are volcanoes so explosive that they burst open in a single mighty rupture, leaving behind a vast subsided pit, the caldera (from a Latin word for cauldron). 这种火山的威力如此之大，它们一下子破土而出，留下一个沉降式大
万物简史