NH 3 volatilizing and NO 3-N leaching are the major ways of N loss in vegetable fields.

The islands are volcanic.

这些岛屿是由火山构成的.

Mount Unzen has been spewing out volcanic ash, gas, and rock today...

云仙山今天一直在向外喷涌火山灰、气体和火山岩。

volcanic eruptions

火山喷发

Such as earthquakes, volcanic eruptions, landslides, tsunamis, typhoons, floods and other unexpected disasters.

例如地震 、 火山爆发 、 泥石流 、 海啸 、 台风 、 洪水等突发性灾害.

Scattered around the globe are more than 100 small regions of isolated volcanic activity.

地球上散布着100多个与外部隔绝的小块的火山活动区.

Over 200 people have been killed by volcanic eruptions...

火山喷发已导致200多人丧生。

Scientists think that all the volcanic activity could cause the island to come to the surface.

科学家相信所有的火山活动将导致这个岛屿升到海面上.

volcanic rocks

火山岩

black volcanic sand

黑色的火山砂

Northern Atka Island is home to at least two potentially active volcanic vents.

北阿科它岛是至少两个潜在活火山口的所在地.

The ancient Romans discovered that volcanic ash made better cement.

古罗马人就发现火山灰使水泥更加坚固.

These things on the earth are actually all volcanic ash from volcanic eruptions.

地上的这些物质其实全部都是火山爆发时喷出的火山灰.

Exactly, when volcanoes erupt, out comes extremely hot lava, volcanic ash , steam, and so on.

就是, 火山喷发喷出来的东西可是温度很高的岩浆 、 火山灰, 和水汽什么的.

According to the radiation-optical quality of volcanic ash we calculated the parameter of radiation-optic .

本文根据火山灰粒子的辐射光学特性,计算了火山灰粒子和平流层本底的辐射 光学参数.

A heavy layer of volcanic ash rained down over the Aegean, covering islands and crops.

浓厚的火山灰层大量降下到爱琴海, 遮盖了岛屿和农作物.

The road to Lake is covered with thick layers of volcanic ash. It's steep and slippery!

前往天池的路面覆盖着厚厚的火山灰. 又陡又滑!

A very large ocean wave caused by an underwater earthquake or volcanic eruption.

由海底地震或火山喷发而造成的巨大海浪.

The Chilean government says towns destroyed a volcanic eruption will be rebuilt 10 km away, Reuters reported.

据路透社报道,智利政府将把因火山爆发而毁坏的城镇重建在10公里远的地方.

The science of forecasting a volcanic eruption has significantly advanced over the past 25 years.

预测火山爆发的科学大大超过过去25年的先进.

Volcanic eruption is the most dangerous, the most terrible natural disasters on earth.

火山喷发是地球上最危险 、 最可怕地自然灾害之一.