ter·mi·na·ble /ˈtɝmənəbəl, ˈtɚ/
  (a.)可終止的,有期限的
  Ter·mi·na·ble a.  Capable of being terminated or bounded; limitable. -- Ter*mi*na*ble*ness, n.
  Terminable annuity, an annuity for a stated, definite number of years; -- distinguished from life annuity, and perpetual annuity.
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  terminable
       adj : possible to terminate or terminating after a designated
             time; "terminable employees"; "a terminable annuity"