Abubuwan amfani da igiya na igiya (1) mai nauyi, ƙarfin ƙarfi, ba tsatsa ba, laushi mai kyau, juriya ga gajiya, juriya mai ƙarfi, karyewar ƙarfi, tsarin gabaɗaya yana da ƙarfi kuma mai dorewa, rayuwar sabis ya fi shekaru 30;(2) Kusa da yanayi, kare muhalli kore, tasiri ...
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