Shin kun san waɗannan sharuɗɗan: kusurwar Helix, kusurwar aya, babban yanki, bayanin martabar sarewa? Idan ba haka ba, yakamata ku ci gaba da karantawa. Za mu amsa tambayoyi kamar: Menene matakin yanke na biyu? Menene kusurwar helix? Ta yaya suke shafar amfani a aikace? Me yasa yana da mahimmanci a san waɗannan siraran...
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