soporific [ˌsɑ:pəˈrɪfɪk]

例句:

• I dozed off during the soporific music.
  我听到这催人入睡的音乐,便不知不觉打起盹儿来了.
  
• the soporific effect of the sun
  太阳让人昏昏欲睡的作用
  
• The warmth of the room and the monotony of the speaker's voice grew soporific.
  房间里的热气和发言人单调的声音让人昏昏欲睡。
  
• Those who tried to listen found the soporific influence irresistible.
  来自J. McCarthy
• Gentle...motion is normally soothing and soporific.
  来自O. Sacks
• The lights are low and a soporific electronic soundtrack fills the air.
  来自THETIMES