Ndi chitukuko cha nthawi, mafakitale monga kafukufuku wa sayansi, ulimi, HVAC, nsalu, zipinda zamakompyuta, ndege, ndi magetsi amafunikira kwambiri kugwiritsa ntchito zowunikira chinyezi.Kufunika kwa mtundu wazinthu kukukulirakulira, ndikuwongolera kupsa mtima kwa chilengedwe ...
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