I(yng)XtЧʸ߹(ji)ܼg(sh)(ji)30-70%
l(f) O(sh)(y)
+
r(ji)h
Xtpȼ30-50%
ڬF(xin)ȼʽĻA(ch)Ϝpȼĺ͜p?gu)Uŷ30-50%a(chn)20%