Muhiimadda maaraynta taayirka: Maaraynta taayirku waa arrin muhiim u ah badbaadada wadista, badbaadinta tamarta iyo dhimista kharashka gaadiidka. Waqtigan xaadirka ah, saamiga qiimaha taayirka ee kharashka gaadiidka ayaa aad u hooseeya, guud ahaan 6% ~ 10%. Sida ku cad...
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