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来源:雅诚德英语网
Volcanoes today are the result of gases that were trapped in Earth's interior during the planet's early stages of formation.
今天的火山是由地球形成早期被困在地球内部的气体所形成的。
Volcanoes today are the result of gases that were trapped in Earth's interior during the planet's early stages of formation.
今天的火山是由地球形成早期被困在地球内部的气体所形成的。