"tending to produce sleep," 1680s, from French soporifique (17c.), formed in French from Latin sopor (genitive soporis) "deep sleep" (see sopor). As a noun from 1722. Earlier as an adjective was soporiferous (1580s as "characterized by excessive sleep," c. 1600 as "soporific").
实用例句
1. the soporific effect of the sun
太阳让人昏昏欲睡的作用
来自《权威词典》
2. 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.
来自《简明英汉词典》
3. 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。
来自柯林斯例句
4. After trudging for some distance, his slow steady steps acted as a soporific.
及至走出来一些路,脚步是那么平匀, 缓慢,他渐渐的仿佛困倦起来.
来自汉英文学 - 骆驼祥子
5. I often have to take soporific before I go to bed.
