Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
subs.
The country round: use P. and V. ἡ πέριξ γῆ. The neighbours: P. and V. οἱ γείτονες; see neighbour. In the neighbourhood of: see near.