美国西南部半干旱地区的湖泊水位在上一个冰河时代似乎比现在更高，这一事实曾一度归因于降水增加。
The fact that lake levels in the semiarid southwestern United States appear to have been higher during the last ice age than they are now was at one time attributed to increased precipitation.
报告称，拉萨这片几十年来都干旱的土地，正在经历着自1961年以来的首次温度超过30度的天气。
Amid the worst drought in decades, Lhasa experienced its first temperature above 30c since records began in 1961, the report said.
干旱条件下，超红短枝的光合速率、蒸腾速率、气孔导度、对水分的利用效率和羧化效率一直高于对照。
Under drought, photosynthetic rate, transpiration rate, stomata conduct, water use efficiency and carboxylic efficiency of the 'Super red Spur' was higher than control's.
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