埃特纳火山一个火热的锥孔为科学家提供了可用来研究的新火山活动。
A fiery new cone on Mount Etna provides scientists with new volcanic activity to study.
自从火山爆发以来，卫星图片几乎是关于火山活动新信息的唯一来源。
Throughout the eruption, satellite images have been nearly the only source of new information about activity at the volcano.
他表示，低浓度是由一系列火山活动储存新的硅酸盐岩石触发的。
The dip, he says, was triggered by a burst of volcanic activity that deposited new silicate rocks.
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