熔岩

dà liàng yán shí hé róng yán pēn fā chū lai

大量岩石和熔岩喷发出来。

An immense volume of rocks and molten lava was erupted.

jiào hòu de róng yán xū yào liǎng zhōu de shí jiān cái néng níng gù

较厚的熔岩需要两周的时间才能凝固。

The thicker lava would have taken two weeks to solidify.