YOU SAID:
Its the end of the world as we know it.
INTO JAPANESE
その世界の終わりとして我々 はそれを知っています。
BACK INTO ENGLISH
At the end of the world as we know it.
INTO JAPANESE
世界の終わりに我々 が知っています。
BACK INTO ENGLISH
But we know at the end of the world.
INTO JAPANESE
しかし、我々 は世界の終わりを知っています。
That didn't even make that much sense in English.