"The outside of that glass is dirty."
Translation:L'extérieur de ce verre est sale.
The word “ce” has always referred to both “this” and “that”. This rule has never changed. You can differentiate them through context. It really doesn’t matter whether you say “this” or “that”. If absolutely necessary, you can add a suffix to the noun:
- ce verre-ci = this glass
- ce verre-là = that glass