是世界上最完整的死火山口之一。
Is the world's most complete one of the extinct volcanic peaks.
他们来到了一个死火山口。
美国俄勒冈州西南部的火山口湖，在一座死火山口上。
Crater Lake in southwestern Oregon of the United States lies in the crater of an extinct volcano.
美国俄勒冈西南边的火山口湖，是在一个地坑中形成的。这个地坑覆盖在一座死火山的顶部。
Crater Lake in southwestern Oregon of the United States was formed in a depression that covers the top of a dead volcano.
美国俄勒冈西南边的火山口湖，是在一个地坑中形成的。这个地坑覆盖在一座死火山的顶部。
Crater Lake in southwestern Oregon of the United States was formed in a depression that covers the top of a dead volcano.
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