YOU SAID:

It's hard to tell what's inside, it's very dark.

INTO JAPANESE

真っ暗なので中に何が入っているのかわかりにくいです。

BACK INTO ENGLISH

It's pitch black so it's hard to see what's inside.

INTO JAPANESE

真っ黒なので中に何が入っているのか分かりにくいです。

BACK INTO ENGLISH

It's pitch black so it's hard to see what's inside.