encroachment
 侵蝕,侵犯


 En·croach·ment n.
 1. The act of entering gradually or silently upon the rights or possessions of another; unlawful intrusion.
    An unconstitutional encroachment of military power on the civil establishment.   --Bancroft.
 2. That which is taken by encroaching on another.
 3. Law An unlawful diminution of the possessions of another.

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 encroachment
      n 1: any entry into an area not previously occupied; "an invasion
           of tourists"; "an invasion of locusts" [syn: invasion,
            intrusion]
      2: entry to another's property without right or permission
         [syn: trespass, violation, intrusion, usurpation]
      3: influencing strongly; "they resented the impingement of
         American values on European culture" [syn: impingement,
         impact]