difícil de atravesar
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
Spanish > Greek
δύσοδος, δυσέμβατος, δυσέξοδος, δυσόδευτος, δυσπάριτος, δυσδιαπόρευτος, δυσέξιτος, δυσδιάβατος, δυσδίοδος, δυσδιεξίτητος, βραδύπορος, δυσμέτρητος, δύσρηκτος, δυσπάροδος