在过去，当岩浆流冷却凝固下来时，水被困住了，因此那里包含了蓄水层。
In the past, water has become trapped also, when lava flows hardened, and thus there are aquifers involved.
最近一次大规模喷发：2002年火山爆发产生的高速岩浆流至今还在流淌。
Last major eruption: an eruption in 2002 produced fast-moving lava flows and is still going today.
之前火山喷发的岩浆流成为了融化的积雪的过滤器，因此在富士山脚提供了很洁净的泉水。
The lava flows from prior eruptions have acted as a filter for melting snow, thus providing very clean spring water at the base of Fuji.
应用推荐