The "Level Requirement" message on enchantment tables is hardcoded and cannot be translated, even though the rest of the enchantment table messages are.

To reproduce:

1. Acquire an enchantment table and an enchantable item.
2. Make sure you have no experience levels.
3. Switch language to ɥsᴉꞁᵷuƎ (ɯopᵷuᴉʞ pǝʇᴉu∩), as that language has a 100% translation (and is pretty easy to compare).
4. Put the enchantable item in the enchantment table.
5. Hover over one of the enchant buttons. The message "Level Requirement: 2" (or similar) should be displayed in red, untranslated.