ἀναβαίνειν ἐπί

From LSJ

ἐν πιθήκοις ὄντα δεῖ εἶναι πίθηκον → in Rome we do as the Romans do | when in Rome, do as the Romans do | when in Rome, do as the Romans | when in Rome, do like the Romans do | when in Rome | being among monkeys one has to be a monkey

Source

Greek > English (Woodhouse)

mount, be raised into the air, embark on, go on board, go up