requiem          
noun [ C ] uk/ˈrek.wi.əm/ us/ˈrek.wi.əm/
 (基督教)追思弥撒,安魂弥撒
a mass (= a Christian ceremony) at which people honour and pray for a dead person
  a requiem mass 一场追思弥撒 
  安魂曲
a piece of music written for this ceremony
  Mozart's/Verdi's Requiem 莫扎特/威尔地的安魂曲