ϺF(xin)I(y)W(xu)Ժ
ɽ|ΌW(xu)ԺD^
ɽ|I(y)I(y)W(xu)ԺD^
I(y)W(xu)ԺD^
ɽ|pI(y)W(xu)ԺD^
I(y)g(sh)W(xu)ԺD^
It(y)W(xu)ԺD^
ɽ|ʡЌW(xu)D^
HЈD^