abstention
n.
1520s, from Middle French abstention (Old French astencion), from Late Latin abstentionem (nominative abstentio) "the act of retaining," noun of action from past participle stem of Latin abstinere "keep back, keep off, hold off" (see abstain).
〔蒋〕[tain，ten，tin=hold握，持，守，ten=tain，-tion名词后缀] 戒，避免，避开