YOU SAID:
the hipopotamus is big
INTO JAPANESE
ヒポポタマスは大きい
BACK INTO ENGLISH
Hippopotamus is big
INTO JAPANESE
カバは大きい
BACK INTO ENGLISH
Hippo is big
INTO JAPANESE
カバは大きい
BACK INTO ENGLISH
Hippo is big
That didn't even make that much sense in English.