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.

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。

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Phoenix will deliver the scoopfuls of dirt to its miniature ovens, and vapors from the heating will be analyzed for traces of organic compounds.

凤凰号挖取土壤，把土壤送入小型钳锅内，然后分析加热时产生的蒸汽，寻找有机物的踪迹。

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The lander is equipped with a robotic arm capable of scooping up ice and dirt to look for organic evidence that life once existed there, or even exists now.

登陆车装备了能够铲除冰和泥土的机器手，试图寻找生命曾经存在或现在依然存在的有机证明。

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Also, scientists at the Hong Kong Polytechnic University have been able to build a nano-thin layer of particles of titanium dioxide, a substance that reacts with sunlight to break down dirt and other organic material.

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They built a thin layer, or "nanostructure, " using minute particles of titanium dioxide, a substance that reacts with sunlight to break down dirt and other organic material and can be coated on cotton to keep the fabric clean.

CNN: Washing no longer dirty work

Whether diners dig into the dirt or not, it does take the idea of organic to a whole new level.

CNN: Tokyo restaurant dishes up the dirt