hal·le·lu·jah /ˌhæləˈlujə/
  哈利路亞[讚美意]
  Hal·le·lu·iah, Hal·le·lu·jah  n. & interj.  Praise ye Jehovah; praise ye the Lord; -- an exclamation used chiefly in songs of praise or thanksgiving to God, and as an expression of gratitude or adoration.
  So sung they, and the empyrean rung
  With Hallelujahs.   --Milton.
     In those days, as St. Jerome tells us,=\“any one as he walked in the fields, might hear the plowman at his hallelujahs.”\=   --Sharp.
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  hallelujah
       n : a shout or song of praise to God
  Hallelujah
     praise ye Jehovah, frequently rendered "Praise ye the LORD,"
     stands at the beginning of ten of the psalms (106, 111-113, 135,
     146-150), hence called "hallelujah psalms." From its frequent
     occurrence it grew into a formula of praise. The Greek form of
     the word (alleluia) is found in Rev. 19:1, 3, 4, 6.