在芬兰的晋朗格尼岛上,经常会出现一种奇异的现象:这个小岛上分布着许许多多的小孔,如果在这些孔内投入火种,使会立即燃起一道道火柱,看上去象是一支支熊熊燃烧的火炬。这是什么原因呢?原来,在这个岛周围的海水中,生长着大量的海草,巨大的海浪不断地把它们抛上岸,它们在湿润的泥土中腐化后产生沼气,从孔里冒出来,一遇火种,便会立即燃烧起来。 On the Langrangi Island in Finland, a strange phenomenon often occurs: there are many small holes in this island, and if fire is put into these holes, a pillar of fire is immediately ignited Go up like a burning torch. What is the reason? Originally, a large number of seaweeds were growing in the sea around the island. Huge waves kept throwing them ashore. They were biodegraded in moist soil and came out of the holes. Once the case of fire, it will immediately burn up.