ɽ|t(y)ˎߵȌƌW(xu)УD
ɽ|ϢI(y)g(sh)W(xu)ԺD^
ƼI(y)W(xu)ԺD^
ɽ|ڶt(y)ƴW(xu)D^
II(y)W(xu)ԺD^
ɽ|һt(y)ƴW(xu)D^(j)
_ŴW(xu)