sono molto difficili da

are very difficult to

→ essere
phrase Rare #25,311
are very difficult to This phrase is followed by an infinitive verb, such as capire (to understand) or trovare (to find).
IT: Questi esercizi sono molto difficili da completare.
EN: These exercises are very difficult to complete.

Queste cose sono molto difficili da trovare in questi giorni.

These things are very hard to find these days.

Le donne cinesi sono molto difficili da comprendere.

Chinese women are very difficult to understand.

Le donne cinesi sono molto difficili da capire.

Chinese women are very difficult to understand.