Thus the work which vulcanologists undertake, monitoring volcanoes and their seismic activity, is crucial to saving lives.

因此，火山学专家的任务，就是观测火山以及它的地震活动，这对救人来说至关重要。

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If meteorologists and vulcanologists developed a dynamic model of the ash cloud's progress, it might be possible to keep more airports open, and to reroute planes to get passengers moving again.

ECONOMIST: Iceland's volcanic eruption