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1·The climatic index of floods and water loggings are usually the abnormal rainfall of a year or a certain period.

洪涝与湿害的气候指标常用年或某时段的降雨异常来描述。

2·The summer rainfall in China is influenced directly by the abnormal vertical motion, which is related closely to the abnormal heat sources in the atmosphere.

大气热源的异常是通过直接影响垂直运动场的异常，进而影响到我国的夏季降水的异常。

3·The emergence of drought was in line with the climate abnormal change and rainfall distribution character.

本地区旱灾的产生与历史时期的气候异常变化和降水分布变化特征是一致的。