и俼УҪи~RҪ_8000rҪӢZˮƽ˜ʡиԇиxµyȺyȲиF(xin)Ҫ Z͌жкܶ (ni)@ʹи~RӛڌWи~Rİճɞ֮
oһи俼Уи~Rߴɣ
һC:֪ӢZ͝hZǖ|ͬĻăɷNdwصİl(f)wϵ
~Y:䌍ҲףӢZһNZ~RښvʷLӵ׃֮܉՝uSȤζMǰYоYͺYĴںͽʹá
~:ᵽ~YӢZ~ӛЧķӛ~(root)
ÿs:Sȫ(jng)һwa(chn)ֹI(y)ļSӢZHZԵλSЇĸ_ų̶ȺͷĔUչӢZĿsZЇS̎ҊSֿɵá
~:Їҽ(jng)J“o”Ą˂κϵɺϵĪ
ô:~KWLJӢŽW^Ƴһdž~Wܵ~MwյһԽ