traversable
  (a.)能橫過的,能越過的,可否定的
  Trav·ers·a·ble a.
  1. Capable of being traversed, or passed over; as, a traversable region.
  2. Deniable; specifically Law, liable to legal objection; as, a traversable presentment.
  ◄ ►
  traversable
       adj : able to be traveled; "highway crews soon had the roads
             travelable" [syn: travelable]