YOU SAID:

i ate a black turtle eating food slowly

INTO JAPANESE

私は食べ物をゆっくり食べる黒いカメを食べました

BACK INTO ENGLISH

I ate a black turtle that slowly eats food

INTO JAPANESE

食べ物をゆっくり食べる黒亀を食べました

BACK INTO ENGLISH

I ate a black turtle that slowly eats food