F(xin)ڵλã(y) > ̘I(y)(j) > Ԕ(x)(ni)
rвϪhˮSˮtGӱ˼Pܭh(hun)Ó
һ(y): ӱʡʯf`ˮSˮGtÓ̰
һ(y): FݸȪˮSˮGtÓ(xing)Ŀӱ˼PÓ
I(yng)a(chn)ƷУÓˮ؇UҺwUˮٟtpw併؇C(j)ÓSƷr(ji)(bo)r(ji)