- 问题详情:TheUnitedStatesissufferingitsworstdrought(干旱)inalmostsixtyyears.TheNationalClimaticDataCenteralsosayshightemperaturesinJuneaddedtothewarmesttwelve-monthperiodonrecord.Record-keepingbeganin1895.ThedroughtmapshowedthatconditionsimprovedintheS...
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