YOU SAID:

Nothing like it has ever been on earth before

INTO JAPANESE

それが地球上でこれまでにあったようなものはありません

BACK INTO ENGLISH

It is on the earth so far as it was not

INTO JAPANESE

それは地球上にない限りは

BACK INTO ENGLISH

As long as it is not on the earth

INTO JAPANESE

それが地球上にない限り

BACK INTO ENGLISH

As long as it is not on the earth