practising  
adjective [ before noun ] UK (US practicing) uk/ˈpræk.tɪ.sɪŋ/ us/ˈpræk.tɪ.sɪŋ/
  (RELIGION)      
  积极参与宗教活动的,虔诚的
actively involved in a religion
  a practising Muslim/Jew/Christian 虔诚的穆斯林/犹太教徒/基督教徒 
   (WORK)      
 从事业务的,执业的
actively involved in a job
  a practising doctor/lawyer 执业医生/律师 
 The number of practising doctors is falling even though more people are qualifying in medicine. 虽然更多的人有了行医资格,但执业医生的人数在下降。