它是一个由8 - 12英寸的一个充满水凝胶的泥土层，还有可以培养土壤中自然菌的有机处理剂。
It's an 8 - to 12-inch layer of dirt impregnated with hydrogels, along with organic agents that nourish the natural bacteria in the soil.
全世界的河流、湖泊和含水土层的减少速度超过了大自然循环水资源的速度；工业和生活用化学物质正迅速污染仅有的水源。
Around the world, rivers, lakes, and aquifers are dwindling faster than Mother Nature can possibly replenish them; industrial and household chemicals are rapidly polluting what's left.
科学家表示，虽然山体滑坡会自然发生，但明确无误的证据表明，亚马尔古老的永久冻土层正在融化。
While landslides can occur naturally, scientists say there is unmistakable evidence that Yamal's ancient permafrost is melting.
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