1·But where does this melted rock come from?
但是，这是否熔化岩石从何而来？
2·Underneath the earth's rocky crust are masses of hot, melted rock.
地球的岩石地壳的下面是大量的炽热的熔化了的岩石。
3·Sometimes the melted rock comes out with a great blast of pressure.
有时熔岩会迸发而出，产生巨大的爆破压力。
4·Sometimes, the melted rock comes out with a great burst of pressure.
有时，熔岩会随着巨大的压力爆发出来。
5·The melted rock often contains steam and other gases under great pressure.
在巨大的压力之下，岩浆通常含有蒸气和其他气体。
6·The melted rock has a low viscosity, and it flows easily up through the overlying rock.
被融化的岩石由于粘性较低，因此能轻易流到岩石层上方形成火山锥。
7·Volcanoes also are found in the middle of plates, where there is a well of melted rock.
在大陆的内部有熔岩井的地方，也发现了火山。
8·Sometimes when a volcano erupts, a very large wall of melted rock moves down the side of a mountain.
有时当火山爆发的时候，由熔岩所构成的一道非常巨大的火墙会沿着火山的表面冲泄下来。
9·Maybe you have seen pictures of these"fireworks"of nature. Sometimes when a volcano erupts, a very large wall of melted rock moves down the side of a mountain.
也学你曾经看到过这些自然界的“烟火”的照片。有时当火山爆发的时候，由熔岩所构成的一道非常巨大的火墙会沿着火山的表面冲泄下来。
10·These epic processes melted and reprocessed vast amounts of rock and concentrated chemical elements in new ways.
在这个宏大的过程中，岩石被融化，再生，以新方式聚集化学元素。