ϺF(xin)I(y)W(xu)Ժ
uSW(xu)ԺD(sh)^
I(y)g(sh)W(xu)ԺD(sh)^
ߵȌ(zhun)ƌW(xu)УD(sh)^
H~ƼI(y)еȌ(zhun)I(y)W(xu)