Air diffusion can impact the pollutant distribution in atmosphere, and so do some non-diffusion aspects such as dry sediment, wet sediment and chemical translation.
污染物在大气中被稀释扩散时，还会发生干沉积、湿沉积和化学转化过程，所有这些都会影响污染物在大气中的分布。
Most desert streambeds are normally dry, but they occasionally receive large flows of water and sediment.
大多数沙漠河床通常是干燥的，但它们偶尔也会有大量的水流和沉积物。
Much of the water in a sample of water-saturated sediment or rock will drain from it if the sample is put in a suitable dry place.
如果把水饱和的沉积物或岩石样品放在合适的干燥的地方，样品中的大部分水将从中流出。
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