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Mbale zamphongo
Timapanga mbale zamtchire zopangidwa ndi zida zapamwamba kwambiri zopangira chitetezo chokwanira komanso kukhazikika kwa zitsanzo. Zipangizo zapamwamba kwambiri za borotilililil sizingokhala zolimba, komanso kukhala ndi kulumikizana kosiyanasiyana ndi zinthu zosiyanasiyana zamankhwala, kuonetsetsa kulondola kwa zoyeserera.
