F(xin)ڵλã(y) > ̘I(y)(j) > Ԕ(x)(ni)
ӱɽúSÓ칤̰-ӱ˼P܌I(y)S
O(jin)y(c)
һ(y): ɽ˾ѭh(hun)偠tÓ̸?-ӱ˼Pܭh(hun)עh(hun)Óŷ칤
һ(y): (yng)SÓ칤̰
I(yng)a(chn)ƷУÓˮ؇UҺwUˮٟtpw併؇C(j)ÓSƷr(ji)(bo)r(ji)