YOU SAID:

There is a giant double rainbow outside my window

INTO JAPANESE

私の窓の外には巨大な二重の虹があります

BACK INTO ENGLISH

There is a huge double rainbow outside my window

INTO JAPANESE

私の窓の外には大きな二重の虹があります

BACK INTO ENGLISH

There is a big double rainbow outside my window

INTO JAPANESE

私の窓の外には大きな二重の虹があります

BACK INTO ENGLISH

There is a big double rainbow outside my window