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- The temperature of volcanic gases is very high. 火山气体的温度很高。
- An agglomerate is a volcanic breccia. 集块岩是一种火山性角砾石。
- The place was recently visited by a serious volcanic eruption. 这地方最近发生了一次严重的火山爆发。
- The phenomena associated with volcanic activity. 火山现象与火山活动有关的现象
- The waves beveled a volcanic island. 波涛径直从一个火山岛上翻腾过去。
- The French Revolution was a volcanic upheaval in European history. 法国大革命是欧洲历史上的一次剧变。
- Basalt is the commonest volcanic rock. 玄武岩是最普通的火山岩。
- Pulverized particulate matter ejected by volcanic eruption. 火山灰火山爆发喷射出来的粉末状颗粒物质
- Volcanic fissures cover the whole area. 火山缝隙覆盖了整个地区。
- A large crater formed by volcanic explosion or by collapse of a volcanic cone. 火山口火山爆发而形成的环形山或大山核心部分的崩塌而形成的环形山
- We put the cage in one of the field's foci. 我们把笼子放在区域中的一个焦点处。
- The midpoint Between the foci is the center. 焦点之间的中点为中心。
- This is unlike volcanic activity above the sea. 这同高出洋面的火山活动是不同的。
- A volcanic rock containing many amygdules. 杏仁岩有很多杏仁状小气孔的火成岩
- There they cool and harden into volcanic ash. 然后在空中它们又冷却变成火山灰。
- It used to be a crater of a volcanic mount. 这曾经是一个火山口，
- Appears to have formed over the volcanic rubble. 火山熔岩表面似乎形成了一层硬壳。
- Volcanic eruptions are like fires in a chimney. 火山爆发就象烟囱里的火焰一样。
- It was a real volcanic eruption? 是真的火山喷发了呢?
- The silence descends in volcanic chutes. 寂静是乘着火山状的降落伞降临的。
