ϺF(xin)I(y)W(xu)Ժ
ɽ|W(xu)(j)У^(q)D(sh)^
ɽ|I(y)W(xu)ԺD(sh)^
P(yng)ݴW(xu)D(sh)^
ɽ|ڶt(y)ƴW(xu)D(sh)^