adj.催眠的,致睡的
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。
the soporific effect of the sun
太阳让人昏昏欲睡的作用
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.