YOU SAID:
It is raining cats and dogs!!!
INTO JAPANESE
土砂降りの雨です!!!
BACK INTO ENGLISH
It's pouring rain!!!
INTO JAPANESE
大雨が降っています!!!
BACK INTO ENGLISH
It's raining heavily!!!
INTO JAPANESE
大雨が降っています!!!
BACK INTO ENGLISH
It's raining heavily!!!
That didn't even make that much sense in English.