YOU SAID:
The best way to keep your bananas from turning brown
INTO JAPANESE
バナナが茶色に変色しないようにするための最良の方法
BACK INTO ENGLISH
The best way to prevent bananas from turning brown
INTO JAPANESE
バナナが茶色になるのを防ぐための最良の方法
BACK INTO ENGLISH
The best way to prevent bananas from turning brown
That didn't even make that much sense in English.