R & D zakumbuyo: Pakuyesa kwa wokamba nkhani, nthawi zambiri pamakhala zochitika monga malo aphokoso oyeserera, kuyesa kocheperako, makina ogwiritsira ntchito ovuta, komanso mawu osamveka bwino. Kuti athane ndi mavutowa, Senioracoustic adakhazikitsa mwapadera njira yoyesera yolankhula ya AUDOBUS...
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