Learn Turkish: Böcekler balı yemesin diye delikleri tül ile kapattık. - We covered the holes with a net so that insects do not eat the honey.

Yemesin is the 3rd-person negative imperative, literally meaning 'let them not eat.' When you combine an imperative verb with diye, it forms a purpose clause. Together, yemesin diye means 'so that they do not eat' or 'in order for them not to eat.'

Why do both bal (honey) and delik (hole) have an extra -ı / -i at the end?

They both take the accusative case suffix because they are specific direct objects in their respective clauses. Balı yemesin means they shouldn't eat the specific honey, and delikleri kapattık means we covered the specific holes.

The translation says 'we covered', but doesn't kapatmak mean 'to close'?

Yes, kapatmak primarily means 'to close' or 'to turn off.' However, in Turkish, when you are blocking an opening like a hole (delik), a gap, or a wound, you 'close' it. In English, we usually say 'cover' or 'plug' in this context.

Could we write tülle instead of tül ile?

Absolutely! İle means 'with' or 'by means of.' It can be written as a separate word, or attached to the noun as a suffix. If attached, it follows vowel harmony and drops the 'i', so tül ile becomes tülle. Both versions are very common and mean exactly the same thing.