I read as. They not only eat meat. Marked wrong
How do you say 'They only do not eat meat'? (As in: meat is the only thing they don't eat)
Mereka tidak makan daging.
They don't eat meat.
Mereka makan semuanya kecuali daging.
They eat everything except meat.
So this particular sentence can also be translated into "they eat not only meat", right?
This translation is word for word. That is the cheat code. Don't bother about the english grammer here