The results showed that the species of H. ammodendron community was the richest on low-lying land, the second on slow and gentle desert, and the least on semi-mobile dune.

结果表明，以平缓低洼地上梭梭群落的植物种类最丰富，其次是平缓沙地，半流动沙丘上的植物种类最少。

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Soil moisture of sand grassland, semi-mobile sand and disturbed inter-dune bottomland, had distinctive variability and larger spatial change range of variability, after rainfall.

沙质草场、半流动沙地和受干扰的丘间洼地降雨后的土壤含水量异质化程度及其相关变化范围非常明显。

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Brooklyn, New York (Motherboard.tv) -- In April of last year the Deepwater Horizon semi-submersible Mobile Offshore Drilling Unit exploded in the Gulf of Mexico, killing 11 men, injuring 17 others and triggering what is generally recognized as one of the greatest human errors ever made and officially the largest unforeseen marine oil catastrophe since people started drilling for oil.

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Two smaller markets are for people living in relatively unpopulated corners of the globe who need a basic mobile service or semi-fixed pay-phones.

ECONOMIST: Staying in touch | The