caldera

caldera的英语例句

1. It rotated to north polar region, zoomed into ice fields , and then down a volcanic caldera.

   它转向北极地区, 放大冰原,深入一个火山口.

2. 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.

3. 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.