YOU SAID:
Please don't rain on my parade.
INTO JAPANESE
パレードに雨が降らないでください。
BACK INTO ENGLISH
Don't rain on the parade.
INTO JAPANESE
パレードで雨を降らせないでください。
BACK INTO ENGLISH
Don't let it rain in the parade.
INTO JAPANESE
パレードで雨を降らせないでください。
BACK INTO ENGLISH
Don't let it rain in the parade.
That didn't even make that much sense in English.