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Μία χελιδὼν ἔαρ οὐ ποιεῖ → One swallow does not a summer make
ensamblarse una pieza de una máquina ἡ ... θερμαστρὶς ... εἰς ἣν ἀρθρεμβολεῖται ὁ λεγόμενος ὁδηγός Ath.Mech.34.6.