rev·o·ca·ble /ˈrɛvəkəbəl ||rɪˈvo-/
  (a.)可廢止的,可取消的
  Rev·o·ca·ble a.  Capable of being revoked; as, a revocable edict or grant; a revocable covenant.
  -- Rev*o*ca*ble*ness, n. -- Rev*o*ca*bly, adv.
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  revocable
       adj : capable of being revoked or annulled; "a revocable order"
             [syn: revokable] [ant: irrevocable]