YOU SAID:

i wonder and i wonder what this could possibly be

INTO JAPANESE

私は不思議に思う、これは一体何なのだろうか

BACK INTO ENGLISH

I wonder, what on earth is this?

INTO JAPANESE

これは一体何なのだろうか？

BACK INTO ENGLISH

What on earth is this?

INTO JAPANESE

これはいったい何なのでしょう？

BACK INTO ENGLISH

What on earth is this?