大家在查：熔岩高原凡湖构造线半湿润气候草原气候庞廷山脉东南欧硬叶常绿林阿拉伯谷地黎巴嫩山脉

火山喷发物

n.eruptive material

火山喷发物

火山喷发物

火山喷发物

1

But the rock is reasonably widespread , being both the underlying stuff of ocean floors and a common outpouring of terrestrial volcanoes .

但是，这种岩石还是相当广泛，因为它既是海床基本物质，也是常见的陆地火山喷发物。

2

The 1991 eruption of Mount Pinatubo in the Philippines had a cooling influence , as the volcano threw off veil-like emissions .

1991年，菲律宾群岛的皮纳图博火山爆发，由于火山喷发物弥漫，如同面罩一般，对气温有一定的冷却作用。

3

Currently , the volcanic eruption is not a threat to human health .

目前，火山喷发物对人体健康并不构成威胁。

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