thunderclouds

例句:

• Violent updrafts in the thunderclouds hurl up tiny pieces of ice, which become coated with more ice and grow into hailstones.
  来自THETIMES
• What about lightning initiation within thunderclouds?
  发生在雷雨云内部的闪电又是怎麽回事?
  
• Much water is transported this way a summer monopoly thunderclouds have on water delivery elsewhere.
  整个夏天,水大都以这种方式传送过来,而在其他地方,这本是雷雨云团的份内之事.
  
• I suspect they also shake their fist at thunderclouds when their golf game is interrupted.
  来自SA