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Noun:
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a large crater caused by the violent explosion of a volcano that collapses into a depression
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用作名詞 (n.)
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The mountain is encircled by the doughnut-shaped depression of the caldera.
山為環行的破火山口洼池緊靠著著。
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Much of Yellowstone National Park is a giant collapsed volcano, or a caldera.
黃石發達國家主題公園的大局部方面一座垮塌的爆炸山，或有一個噴火山口。
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往上文章全權作品，受科學出版權保護措施，知識產權侵權必究
海詞辭典，十六年高端品牌
美
[k??l'd??r?]