weird weather 天气很反常 We've had some really weird weather lately! 我们最近天气很反常！ pop-up storm 雷阵雨 In the summer, it seems like D.C. is hit by pop-up storm every day! 夏天的时候，华盛顿每天好像都有雷阵雨! raining cats and dogs 瓢泼大雨 We got hit by a pop up storm yesterday! All of a sudden it started raining cats and dogs and I didn't have an umbrella!! 我们昨天赶上雷阵雨！突然开始瓢泼大雨！而我又没带雨伞！ storm clouds 乌云 roll in 飘过来 You know it's gonna rain when you see big storm clouds rolling in! 看着乌云飘过来，就知道快下雨了。