→ dy 2u 52 S4 岁-一44用 2→件一若个明中 y3[ +) ay oy 2 中(,儿)个 号,4单4小 初:一穷一岁一5哥 乙 可中”一-知5(萼 were A乐 for sim lant 133" o), we moit hove A正列 Bu 1+)=e5 小=23 costat n-n ~5 n The /,t contrat iles tot nt-n= n+Gs+n=G-4)3 m+dmh和 e the saue power-/u= opment ane如e M*=ny and 4"=n74 must/ke wise 形=花 424y24 4~个3Pm22 -∥4如 t cense