During the dry periods that are common phenomena along the desert margins, the pressure on the land is often far in excess of its diminished capacity, and desertification results.

在沙漠边缘地区常有的旱季，土地所受的压力往往远超其被削弱的承受能力，沙漠化因此发生。

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Firstly, he said the experiments had been done on dry - or briefly soaked - rocks at room temperature and pressure.

他说首先，这些实验是在处于室温和室内压力的干燥的或是经过简单浸泡的岩石上作的。

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They are one of a number of drugs — including antidepressants, ibuprofen, antihistamines and blood pressure medications — that cause dry mouth, which means they reduce the production of saliva.

消炎眼药水连同抗抑郁药、镇痛消炎药、抗组胺药和降血压药这些药品都会让你觉得口干，也就是说它们会抑制唾液分泌。

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In Houston last summer, there were 700 water main breaks every day due to aging pipes and pressure from increased water use and dry soil.

FORBES: Three Ways To Solve The Water Crisis Now

National Weather Service meteorologist "Skip" Ely said the dry pattern is caused by a persistent area of high pressure that has dominated North Texas weather since the end of June, blocking normal moisture flows across the South.

CNN: U.S. pledges help for Texas farmers hit by record drought

He forecast a cold, frosty and mainly dry night in Britain and warned that the system of low pressure was likely to wreak more havoc in Germany and Poland overnight.

BBC: Parts of UK on flood alert amid heavy rain