rainfall
/ˈreɪnˌfɔl/
water falling in drops from vapor condensed in the atmosphere
中文释义：降雨量；降雨
The annual rainfall in this region is less than 200 millimeters.
该地区的年降雨量不足200毫米。
Heavy rainfall caused flooding in several low-lying areas.
强降雨导致几个低洼地区发生洪水。