sedative [ˈsɛdətɪv]

例句:

• The plant acts as a sedative in treating neuralgia.
  这种植物被用作治疗神经痛时的镇静药。
  来自柯林斯例句
• He may prescribe a sedative or other relaxing drugs.
  来自B. Spock
• The patient is sedated with intravenous use of sedative drugs.
  静脉注射了镇静剂后病人安然入睡。
  
• They use opium as a sedative, rather than as a narcotic.
  他们把鸦片用作镇静剂而不是毒品。
  
• A late...breakfast, with the additional sedative of a news-paper.
  来自Dickens
• Maybe it's time to take a sedative, or see a shrink ?
  来自SA