名词
中文翻译：火山构造凹陷
同义词：
['volcanic trough', 'volcanic depression']
例句：
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1.The volcanic trough is a deep valley formed by the eruption of a volcano.
火山构造凹陷是由火山喷发形成的深谷。
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2.The volcanic depression is an area where the ground is lower than normal, caused by the buildup of magma beneath the surface.
火山构造凹陷是地面低于正常水平的区域，这是由于地壳下积聚的岩浆造成的。
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3. The geologists are studying the volcanic trough to determine its potential for future eruptions.
地质学家正在研究火山构造凹陷，以确定其未来喷发的可能性。