A 25-kilometre-long fissure erupted 12 km3 of lava over the course of seven months.

25 k m长的裂缝在7个月内喷发了12 km3的熔岩。

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Every year, thousands of cubic kilometres (km3) of fresh water fall as rain or snow or come from melting ice.

每年，雨雪和融冰所带来的淡水资源有几千立方千米。

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Mauna Loa is the largest shield volcano - 18,000 cubic miles (75,000 km3) - in terms of area covered on Earth.

冒纳罗亚是最大的盾状火山- 18,000立方英里(7.5万立方公里)-在地球上的覆盖面积计算。

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The volume of freshwater resources is around 35 million km3, or about 2.5% of the total volume.

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The total volume of water on Earth is about 1.4 billion km3.

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Of these freshwater resources, about 24 million km3 or 70% is in the form of ice and permanent snow cover in mountainous regions, the Antarctic and Arctic regions.

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