DICT.TW Dictionary Taiwan

 一回生，二回熟 [ㄧ ㄏㄨㄟˊ ㄕㄥ , ㄦˋ ㄏㄨㄟˊ ㄕㄨˊ; yi1 hui2 sheng1 , er4 hui2 shu2]
 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
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