Bukeng ena, ke tla hlalosa hore na motsoako oa ribone o tšekaletseng o sebetsa joang, 'me ke kamoo o sebetsang kateng: Motsoako oa ribone o tšekaletseng ke eng?Lits'ebetsong tsohle tsa ts'ebetso, ho tloha ho lijo ho ea ho tsa meriana, tsa temo, lik'hemik'hale, li-polymers, le tse ling, motsoako oa li-ribbon o otlolohileng ke o mong oa tse sebetsang hantle ka ho fetisisa, ...
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