英語翻譯：

例句：

1. 降雨量雨的數(shù)量以英寸表示，為某一地區(qū)在特定時(shí)間段內(nèi)雨、雪、冰雹或霰的積累量
   The quantity of water, expressed in inches, precipitated as rain, snow, hail, or sleet in a specified area and time interval.
2. 冰雹霹靂啪啦地落在屋頂上。
   The hail rattled on the roof.
3. 石頭像雹子一樣落在他們身上。
   Stones hailed down on them.
4. 正在下雹。
   It is hailing.