YOU SAID:
you are the worst human being this earth has ever seen.
INTO JAPANESE
あなたはこの地球が今まで見た中で最悪の人間です。
BACK INTO ENGLISH
You are the worst human being this earth has ever seen.
INTO JAPANESE
あなた方は、この地球が今まで見た中で最悪の人間です。
BACK INTO ENGLISH
You are the worst human being this planet has ever seen.
INTO JAPANESE
あなた方は、この惑星が今まで見た中で最悪の人間です。
BACK INTO ENGLISH
You are the worst human being this planet has ever seen.
That didn't even make that much sense in English.