Sekuziva kwemunhu wese, makapu maviri egirazi makapu anowanzo kuoneka muhupenyu hwezuva nezuva hwevanhu.Zvingave zvekushandisa kwavo kana sechipo, kaviri-layer girazi makapu isarudzo iri nani.Iyo nzira yekugadzira yeaviri-layer girazi ichiri yakanyanyisa kunaka, uye ndizvo chaizvo nekuda kweiyo yakakosha tekinoroji isu ...
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