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
sumptĭ-făcĭo: fēci, 3, v. a. 2. sumptus,
I to lay out, spend, expend: restim, Plaut. Cas. 2, 7, 2.
sumptifacio, is, ere. 3. :: 費用
