vi(不满，不赞许地)皱眉，蹙额(make the forehead wrinkle and the eyebrows more down as a sign of worry，disapproval，deep thought，etc) [I，I+prep(at)]：sit～ing much紧锁双眉坐在那里;make sb～使某人皱眉;～at the noise/the noisy class/the letter's contents/sb/sb's bad behaviour因喧闹声/吵吵闹闹的班级/信的内容/某人/某人的不良行为而皱起眉头;〖反〗smile;

frown on/upon (v prep) 不赞成，不以为然 (vt)：～on late nights out/sb's staying out late不赞成深夜外出/在外面待到很晚;～upon overindulgence in drink/smoking不赞成酗酒/过度吸烟;

n 皱眉，蹙额(look of anger，displeasure，deep thought，etc produced by drawing the eyebrows together and causing lines on the forehead) [C]： look at sb/one's exam paper with a worried～焦虑地皱着眉头看着某人/自己的试卷;notice a slight～of disapproval/disappointment on sb's face注意到某人因不赞成/失望而略皱眉头;develop a deep～眉头越皱越紧;sb's forbidding～某人皱起吓人的眉头