“倾盆大雨”，汉语成语，字面意思是“雨水像从盆里泼出来一样”，比喻雨大势急（to rain extremely heavily）。与英文习语“rain cats and dogs”意思相近，表示“to fall as water in a continuous stream of drops from the clouds”。
例句：
今天一定要带把伞，因为外面正下着倾盆大雨呢！
Be sure to carry an umbrella today, because it’s raining cats and dogs out there!
