The impact of raindrops on the loose soil tends to transfer fine clay particles into the tiniest soil spaces, sealing them and producing a surface that allows very little water penetration.

降水往往会把细小的粘土颗粒转移到土壤的最微小的空隙中，使这些空隙变得封闭，从而形成了一种几乎不允许任何水分渗透下来的表层土壤。

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Two nearby detectors would record evidence of particles created by the impact.

临近的两个探测器会记录下由冲击造成的微粒子的迹象。

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Glory will be able to differentiate between different types of particles in the atmosphere to monitor the impact of manmade particles, like soot, on Earth's climate.

Glory将能够区分大气中颗粒物的不同种类来检测人造颗粒物如烟灰对地球气候的影响。

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Whether or not the impact of these particles becomes an issue of substance or dissipates as many environmental problems sometimes do, there is another good reason why the future of the metal might not be so solid.

BBC: Smelly socks raise silver stink

For the camera, a laser pulse is fired at a wall, and the impact of hitting the wall causes the particles of light to scatter.

CNN: A camera that can see around corners

Last week, a different research group unveiled new findings on the impact of volcanic eruptions, which pump vast amounts of particles into the air, some rising as far as the stratosphere.

BBC: More sulphur trails from the stratosphere