Zaka mazana ambiri zachitukuko zatsimikizira kuti gofu ndi masewera omwe amafunikira kulondola, luso, komanso kukhazikika, kukopa anthu mamiliyoni ambiri padziko lonse lapansi.Komabe, momwe ukadaulo ukupita patsogolo, ngolo zamagetsi za gofu zikusintha pang'onopang'ono magalimoto achikhalidwe oyendera mafuta, kusintha ...
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