this is ___the term it rains cats and dogs has come into use

this is ___the term it rains cats and dogs has come into use 三道英语语法1This is___the term"it rains cats and dogs."has come i it rains cats and dogs. What is the meaning of "It rains cats and dogs"? It rains cats ang dogs. cats and dogs什么意思? 英语问题It rains cats and dogs和It's rains cats and dogs lt rains dogs and cats It rains cats and dogs 为什么要翻译成大雨倾盆. It rains cats and dogs.为什么要译成大雨倾盆 It rains cats and dogs.(汉语是?）快 cat and lt rains cats and dogs 翻译It is raining cats and dogs!