˟oѺJвҪκεѺՈm(x)εcˣ˟oѺJp_ll(f)@p_һNͣ
һ_ȡϢϢl(f)˽JJ(sh)~Ҫ֧Ϣ_ȡϢϢl(f)߾͕ʧ
ÿF(xin)J˾ҪJṩCÿ͑CykÿڟoHrJ˾ÏyՈPOSCˢȡF(xin)oJJȡm(x)M
ǵXfϴXһЩJ˾挍ݾǡXfl(f)JĿľǞˡϴX
ѴՈ˟oѺJreҪyՈҪҎ(gu)J˾ՈJϮ(dng)_hֱJW(wng)Ү(dng)?sh)صJC(gu)
D(zhun)d(lin)W(wng)