YOU SAID:
You need a red card to open this door
INTO JAPANESE
このドアを開くにはレッドカードが必要です
BACK INTO ENGLISH
A red card is required to open this door
INTO JAPANESE
このドアを開くにはレッドカードが必要です
BACK INTO ENGLISH
A red card is required to open this door
That didn't even make that much sense in English.