ɽ|t(y)W(xu)ߵȌƌW(xu)У
uSW(xu)ԺD(sh)^
ɽ|W(xu)(j)У^(q)D(sh)^
ɽ|wW(xu)ԺУ^(q)D
ɽ|ŮӌW(xu)ԺD(sh)^