Volcanic activity has been responsible for large chunks of surface morphology in the western states, alaska, and hawaii . 火山活动是形成美国西部各州，阿拉斯加州和夏威夷州大片地形的主要原因。
In this region of convergence we find the deepest earthquakes, great topographic relief, and intensive volcanic activity . 在这种聚合地区，我们发现了最深的地震，巨大的地形起伏和强烈的火山活动。
Also, we were able to experiment with scientific measurements that may help us better predict future volcanic eruptions . 同样，我们也可用某些科学的测量手段进行实验来帮助我们更好地预测未来的火山喷发。
These gravity anomalies correspond to positive aeromagnetic anomalies and are interpreted as being due to buried volcanic or intrusive rock . 这种重力异常和航磁异常相符，其原因可能是有隐伏的火山岩和侵入岩。
A pollutant such as volcanic ash may destroy plant life, kill or starve animals, and fill up lakes and rivers which fish depend on . 象火山灰这样的污染物，可以毁坏植物，杀害动物或使其饿死，填塞鱼类赖以生存的湖泊与河流。
They are free of turbidity, except in some limestone areas and volcanic areas with high secondary permeability where large underground rivers occur . 它们不至于浑浊、只是在灰岩地区和火山地区具有高的次生渗透性并存在大地下河时除外。
Volcanic soil is among the most fertile on earth 火山土是地球上最肥沃的土壤之一
Volcanic silicates fiber reinforced multi - layer board 火山硅酸盐纤维增强多层板
Volcanic eruptions are like fires in a chimney 火山爆发就象烟囱里的火焰一样。
The phenomena associated with volcanic activity 火山现象与火山活动有关的现象
