1. drops of fresh water that fall as precipitation from clouds. 
   从云层降下的淡水水滴。
2. Sulfur dioxide and nitrogen oxides also cause acidic precipitation, commonly called acid rain. 
   二氧化硫和氨氧化物引起酸性降雨，常称为酸雨。
3. Precipitation Location The space-time location of the precipitation in 2001 is not well balanced, dominating by time periods with little rain. 
   降水分布2001年降水时空分布不均，基本上以少雨时段为主。
4. A heavy fall of rain. 
   倾盆大雨
5. A shower or fall of rain. 
   阵雨，降雨

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• 1. 降雨量
  降雨量rainfall...降雨量 amount of precipitation ;fall of rain
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