Z(y)֣
(zhn)Σ
Z(y)l(f)
wng zhn b wi
Z(y)w
(zhn)Σ
ó̶ȣ
һ
a(chn)
Ŵ
x~
Z(y)̎
|h̡hȂ(gu)mÑ(zhn)mƽ(zhn)Σ
Z(y)÷
eZ(y)Z(y)̎µ
Z(y)䣺
xA(y)A(y)m(zhn)Σ