languor
n
1 [U] tiredness or laziness of mind and body; listlessness 倦怠; 慵悃; 无精打采.
2 [sing] feeling of dreamy peacefulness 恬静; 平静
music that induces a delightful languor 使人心旷神怡的音乐.
3 [U] oppressive stillness (of the air, etc) (空气等的)沉闷
the hazy languor of a summer´s afternoon 夏日午後那种令人迷离恍惚的沉闷.