The explosion cracks the earth's surface and scatters ash and huge chunks of rock for many kilometers around the vent . 这样的爆炸把地表炸开以后，其火山灰和巨大石块可散落到火山口周围好几公里远的地方。
You know , the caldera is actually the top of a volcano 火山口是火山的最顶端
Flames blazed out from the crater of the volcano 火焰从火山口猛烈地喷出来。
Lava boiled up from the crater of the volcano 熔岩从火山口沸腾着升起来。
Smoke puffed up from the crater of the volcano 烟从火山口一阵阵地喷出。
We ' d have to go on foot into the crater 我们必须步行进入火山口。
Channels and vents form and disappear below the caldera 破火山口下面的管道及喷口不断形成及消失。
A series of collapse craters , or calderas , lie at its summit 其顶端有一系列崩塌的火山口，或称火山臼。
