M'dziko lamphamvu lakupanga mawaya, njira zopangira zopanda msoko zimadalira kagwiridwe kabwino kazinthu ndi kumasula zinthu. Makina olipira, omwe amadziwikanso kuti makina otsegulira, amatenga gawo lofunikira pankhaniyi, kuwonetsetsa kuwongolera kwakanthawi kokhazikika, kupewa kukodwa ndi zinthu, komanso ...
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