Փĸʽ
ƮI(y)ՓĵҪ(f)sֻҪ˽ԭĻҎ(gu)tՓĽY(ji)(gu)źӴ߉(yn)֔(jn)ZԱ_(d)ͨ_(d)I(y)ҪI(y)ՓĵժҪһƪҪĮI(y)ՓģnjƌW(xu)I(y)ıҪlȻܶƌW(xu)]սY(ji)(gu)˼Sд(hu)ҪĮI(y)ՓġժҪĹǿY(ji)ՓĵҪ(ni)
ƮI(y)ՓĵҪ(f)sֻҪ˽ԭĻҎ(gu)tՓĽY(ji)(gu)źӴ߉(yn)֔(jn)ZԱ_(d)ͨ_(d)I(y)ҪI(y)ՓĵժҪһƪҪĮI(y)ՓģnjƌW(xu)I(y)ıҪlȻܶƌW(xu)]սY(ji)(gu)˼Sд(hu)ҪĮI(y)ՓġժҪĹǿY(ji)ՓĵҪ(ni)