YOU SAID:
You need a red key to open this door
INTO JAPANESE
この扉を開くには赤いキーが必要です
BACK INTO ENGLISH
You need a red key to open this door
INTO JAPANESE
この扉を開くには赤いキーが必要です
BACK INTO ENGLISH
You need a red key to open this door
That didn't even make that much sense in English.