YOU SAID:

the world is ending as we know it

INTO JAPANESE

私たちが知っているように世界は終わりです

BACK INTO ENGLISH

The world is over as we know

INTO JAPANESE

私たちが知る限り、世界は終わった

BACK INTO ENGLISH

As far as we know, the world is over

INTO JAPANESE

私たちの知る限りでは、世界は終わっています

BACK INTO ENGLISH

To the best of our knowledge, the world is over

INTO JAPANESE

私たちの知る限りでは、世界は終わった

BACK INTO ENGLISH

To the best of our knowledge, the world is over