YOU SAID:

You would not believe your eyes if ten million fireflies lit up the room as I fell asleep.

INTO JAPANESE

私が眠りについたとき、一千万匹のホタルが部屋を照らしたら、目を疑うでしょう。

BACK INTO ENGLISH

If ten million fireflies lit up my room when I fell asleep, I wouldn't be able to believe my eyes.

INTO JAPANESE

もし私が眠りにつくときに、1000万匹のホタルが部屋を照らしてくれたら、私は目を疑うでしょう。

BACK INTO ENGLISH

If 10 million fireflies lit up my room as I fell asleep, I wouldn't believe my eyes.

INTO JAPANESE

もし私が眠りにつくときに、1,000万匹のホタルが私の部屋を照らしてくれたら、私は目を疑うでしょう。

BACK INTO ENGLISH

If 10 million fireflies lit up my room as I fell asleep, I wouldn't believe my eyes.