The drought that caused the rapid decline has been linked to El Niño, a climate phenomenon that occurs every two to seven years and changes worldwide weather patterns.
导致的水位的急剧下降的干旱已经和厄尔尼诺现象联系起来，这种气候现象每两到七年会出现一次并改变世界范围内的天气形势。
Temperatures in 2009-10 have been affected by the phenomenon known as El Niño which follows the warming of the Pacific ocean near the equator.
赤道附近的太平洋温度升高引起了厄尔尼罗现象，它影响了2009-10年的全球气温。
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