in·de·ter·min·able /ˌɪndɪˈtɚ/
  (a.)不能決定的,不能解決的
  In·de·ter·mi·na·ble a.  Not determinable; impossible to be determined; not to be definitely known, ascertained, defined, or limited. -- In*de*ter*mi*na*bly, adv.
  In·de·ter·mi·na·ble, n. An indeterminable thing or quantity.
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  indeterminable
       adj 1: not capable of being definitely decided or ascertained [syn:
               undeterminable] [ant: determinable]
       2: unable to be determined