Cistercian       
noun [ C ], adjective uk/sɪˈstɜː.ʃən/ us/sɪˈstɝː.ʃən/
 (基督教)西多会的修士(或修女)
(a member) of a particular Christian  order  (= religious group)
  The Cistercian Order was started in France in 1098. 西多会于1098年创于法国。 
 Cistercian monks and nuns take a vow of silence. 西多会的修士和修女们要发誓静默。