un·earth /ˌʌnˈɚ/
  (vt.)發掘,掘出,從洞中趕出,揭露,發現
  Un·earth v. t. [imp. & p. p. Unearthed p. pr. & vb. n. Unearthing.]  To drive or draw from the earth; hence, to uncover; to bring out from concealment; to bring to light; to disclose; as, to unearth a secret.
     To unearth the roof of an old tree.   --Wordsworth.
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  unearth
       v 1: bring to light; "The CIA unearthed a plot to kill the
            President"
       2: lay bare through digging; "Schliemann excavated Troy" [syn:
          excavate]