...高温病（ heat-related illnesses ），比如中暑、脱水（ dehydration ）、痱子（ heat rash ）等，也会导致“干旱期”(dry spell)，引起“农作物歉收”(crop failure)，从而给人们生活生产带来很大影响。
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许多不同种类的植物已形成耐受干旱期的策略。
Many different kinds of plants have developed tactics to weather dry spells.
古老的淡水绿藻一定进化出了一些特性，这些特性使得它们能够熬过极端的温度和干旱期。
Ancient fresh water green algae must have evolved features that enable them to withstand extremes of temperature and periods of dryness.
它们的状况并没有因近期的干旱期得以改善：拉贾斯坦邦的南部在1996到2004年间遭受了长达八年的干旱。
Their condition hasn't been helped by recent dry spells: southern Rajasthan suffered an eight-year drought between 1996 and 2004.
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