pen·ance /ˈpɛnən(t)s/
  懺悔,悔過,贖罪,苦修(vt.)使以苦行贖罪
  Pen·ance, v. t. [imp. & p. p. Penanced ] To impose penance; to punish. “Some penanced lady elf.”
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  Pen·ance n.
  1. Repentance. [Obs.]
  2. Pain; sorrow; suffering. [Obs.] “Joy or penance he feeleth none.”
  3. Eccl. A means of repairing a sin committed, and obtaining pardon for it, consisting partly in the performance of expiatory rites, partly in voluntary submission to a punishment corresponding to the transgression, imposed by a confessor or other ecclesiastical authority.  Penance is the fourth of seven sacraments in the Roman Catholic Church.
     And bitter penance, with an iron whip.   --Spenser.
  Quoth he, “The man hath penance done,
  And penance more will do.”   --Coleridge.
  penance
       n 1: remorse for your past conduct [syn: repentance, penitence]
       2: a Catholic sacrament; repentance and confession and
          satisfaction and absolution
       3: voluntary self-punishment in order to atone for some
          wrongdoing [syn: self-mortification, self-abasement]