They also report that the crater lake is stable.
他们还报告说，火山湖是稳定的。
Finally, it is concluded that the crater lake is a caldera.
论证了大龙湾火山口湖为破火山口。
Crater Lake is a popular sight-seeing spot located in America.
火山口围着的地方是美国很热门的旅游景点。
Crater Lake is a popular sight-seeing spot located in America.
火山口围着的地方是美国很热门的旅游景点。
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