efficacious [ˌɛfɪˈkeʃəs]

例句:

• They hope the new drug will prove especially efficacious in the relief of pain.
  他们希望这种新药能在缓解疼痛方面产生特效。
  
• It occurs to me that example is always more efficacious than precept.
  我想到身教重于言教.
  
• Qingdao is a resort efficacious for a variety of bodily ills.
  青岛是一个对各种身体疾病都有疗效的疗养胜地.
  
• Is longer term psychodynamic psychotherapy more efficacious than shorter term therapies?
  来自SA
• Isn't enough information available to know these drugs are safe and efficacious?
  来自WSJ
• At present there is no convincing evidence that psychoanalytic treatment as such is efficacious.
  来自P. Medawar