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Lifilimi tsa UV 'Marakeng oa Tlhokomelo ea Letsatsi
Tlhokomelo ea letsatsi, haholo-holo tšireletso ea letsatsi, ke e 'ngoe ea likarolo tse holang ka potlako' marakeng oa tlhokomelo ea botho. Hape, tšireletso ea UV joale e kenyelletsoa matsatsing a mangata a letsatsi...Bala haholoanyane