Examples of using "それが何なのか分からない。" in a sentence and their english translations:
- I don't know what it is.
- I don't know what that is.
- I have no idea what that is.
- I have no idea what it is.
- I don't know what it is.
- I don't know what that is.
- I don't know what it is.
- I don't know what that is.