长达一个世纪里，由于我们向大气中释放了二氧化碳和其他温室气体，当今全球变暖问题本身不经意间证实了地球工程学。但是皮纳图火山的爆发提供了当今地球工程学潜力的实例。
Modern global warming is itself evidence of inadvertent geoengineering, the result of all that carbon dioxide and other greenhouse gases we've been pumping into the atmosphere for a century or so.
1991年皮纳图火山爆发时释放了超过20亿多吨的二氧化硫进入大气，致使两年左右气温下降了1度半。
The Mount Pintaubo eruption in 1991 released more than 20 million tons of sulfur dioxide into the atmosphere, causing a drop in temperature by half a degree Celsius for about two years.
火山爆发可以向大气中的平流层释放大量二氧化硫。
Large eruptions can release huge clouds of sulfur dioxide into the stratosphere.
研究人员还发现了富含氧化铝的大量玄武岩，当它们与硅土(二氧化硅)相碰撞时，就可以引发火山爆发。
Large amounts of basalt rich in aluminum oxide were also found, which can trigger an eruption when it collides with silica.
巨大的火山灰烟霭含有大量的二氧化硅- - - - -一种跟着这种类型的火山爆发而来的天然成分。
The enormous dust cloud may contain large amounts of silica, a natural component of rock that comes with these types of volcanic explosions.
并且还发现大量富含氧化铝的玄武岩，它们与硅相撞时可以引发火山爆发。
Large amounts of basalt rich in aluminium oxide were also found, which can trigger an eruption when it collides with silica.
巨大的火山灰云雾含有大量的二氧化硅——一种随著这种类型的火山爆发而来的自然成分。
The enormous dust cloud may contain large amounts of silica, a natural component of rock that comes with these types of volcanic explosions.
巨大的火山灰云雾含有大量的二氧化硅——一种随著这种类型的火山爆发而来的自然成分。
The enormous dust cloud may contain large amounts of silica, a natural component of rock that comes with these types of volcanic explosions.
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