Gutondekanya amabara, bikunze kwitwa gutandukanya amabara cyangwa guhitamo optique, bigira uruhare runini mubikorwa byinshi nko gutunganya ibiribwa, gutunganya ibicuruzwa, no gukora, aho gutondekanya neza ibikoresho ari ngombwa. Mu nganda za chili pepper, kurugero, urusenda rero ...
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