go over old ground constantly
From LSJ
πολλὰ δ' ἄναντα κάταντα πάραντά τε δόχμιά τ' ἦλθον → and ever upward, downward, sideward, and aslant they went
English > Greek (Woodhouse Quotes)
θάμα μεταστρέφεσθαι ἐπὶ τὰ εἰρημένα
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