YOU SAID:
The inner workings of my brain are an enigma.
INTO JAPANESE
私の脳の内部の働きは謎です。
BACK INTO ENGLISH
The inner workings of my brain are a mystery.
INTO JAPANESE
私の脳の内部の仕組みは謎です。
BACK INTO ENGLISH
The inner workings of my brain are a mystery.
That didn't even make that much sense in English.