YOU SAID:

I can not believe you have indulged in the belief of such a trivial thing.

INTO JAPANESE

そんな些細なことを信じ込んでいたなんて信じられない。

BACK INTO ENGLISH

I can't believe you believed in such a trivial thing.

INTO JAPANESE

そんな些細なことを信じていたなんて信じられない。

BACK INTO ENGLISH

I can't believe I believed in such a trifle.

INTO JAPANESE

そんな些細なことを信じていたなんて信じられない。

BACK INTO ENGLISH

I can't believe I believed in such a trifle.