YOU SAID:
Japanese doesn't understand how to translate this sentence back into english if it does I will say poopyhead
INTO JAPANESE
日本人がこの文を英語に戻す方法を理解していない
BACK INTO ENGLISH
Japanese don't understand how to convert this sentence back to English
INTO JAPANESE
日本人はこの文章を英語に戻す方法を理解していない
BACK INTO ENGLISH
Japanese don't understand how to convert this sentence back to English
You've done this before, haven't you.