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一回生,二回熟

Source : CEDICT

lit. at first raw, later ripe (idiom); unfamiliar at first but you get used to it/strangers at first meeting, but soon friends/awkward at first but becoming skillful later/an acquired taste

Source : CEDICT

lit. at first raw, later ripe (idiom); unfamiliar at first but you get used to it/strangers at first meeting, but soon friends/awkward at first but becoming skillful later/an acquired taste