rainfall

• The forecast says to expect thunderstorms and heavy rainfall
  天气预报说会有雷雨
• Excessive rainfall had made the harvest impossible
  雨量过多，丰收已经不可能了。
• Rainfall this year exceeded the yearly average
  今年的雨量超过了年平均降雨量。
• The amount of rainfall determines the size of the crop
  降雨量决定著收成的好坏。
• Grading of products quality for siphon rainfall recorder
  虹吸式雨量计产品质量分等
• The rainfall there averages 300 mm a year
  那儿的年降雨量平均每年为三百毫米。
• What is the average annual rainfall in this region
  这个地区的年平均降雨量是多少
• The evaluation model of the rainfall forecast methods
  雨量预报方法的评价模型