in·de·ci·pher·able /ˌɪndɪˈsaɪf(ə)rəbəl/
  (a.)辨讀不出的,譯解不出的,無法解釋的
  In·de·ci·pher·a·ble a. Not decipherable; incapable of being deciphered, explained, or solved. -- In*de*ci*pher*a*bly, adv.
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  indecipherable
       adj 1: not easily deciphered; "indecipherable handwriting" [syn: unclear,
               undecipherable, unreadable]
       2: impossible to determine the meaning of; "an indecipherable
          message"