资料来源 : pyDict

除去,回避

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Obviation \Ob`vi*a"tion\, n.
   The act of obviating, or the state of being obviated.

资料来源 : WordNet®

obviation
     n : the act of preventing something by anticipating and
         disposing of it effectively [syn: {forestalling}, {preclusion}]