preclusion
n.
1610s, from Latin praeclusionem (nominative praeclusio) "a shutting off," noun of action from past participle stem of praecludere (see preclude).
〔蒋〕[clud=close，shut关闭（clud也作clus），clud→clus，-ion名词后缀] 预防，防止，排除
〔蒋〕[clud=close，shut关闭（clud也作clus），clud→clus，-ion名词后缀] 预防，防止，排除