ἀδύνατον καὶ οὐκ ἀνθρώπειον → not for man to attempt
trȳgōn: ōnis, m., = τρυγών,I a stingray: Raia pastinaca, Linn.; Plin. 9, 48, 72, § 155; Aus. Ep. 4, 60.