de·vo·tion·al /-ʃnəl, ʃənḷ/
  (a.)信仰的,虔誠的,禱告的
  De·vo·tion·al a.  Pertaining to, suited to, or used in, devotion; as, a devotional posture; devotional exercises; a devotional frame of mind.
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  devotional
       adj : relating to worship; "a devotional exercise"