ir·re·mov·able /-ˈmuvəbəl/
  (a.)不能移動的
  Ir·re·mov·a·ble a. Not removable; immovable; inflexible. --Shak. -- Ir*re*mov*a*bly, adv.
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  irremovable
       adj : impossible to remove or take away or dismiss; "irremovable
             boulders"; "irremovable obstacles" [ant: removable]