不满之声,嘘声发嘘声
Catcall \Cat"call`\, n. A sound like the cry of a cat, such as is made in playhouses to express dissatisfaction with a play; also, a small shrill instrument for making such a noise. Upon the rising of the curtain. I was very much surprised with the great consort of catcalls which was exhibited. --Addison.
catcall n : a cry expressing disapproval v : utter catcalls at