<prompt> Translate the following text to SwahiliTherefore, because of the immature design, initially manufactured development missiles were hand-made, took longer to build than planned, and suffered from poor quality.  <response>: Kwa hiyo, kwa sababu ya muundo usio mkamilifu, makombora ya maendeleo yaliyotengenezwa mwanzoni yalifanywa kwa mikono, yalichukua muda mrefu kujenga kuliko ilivyopangwa, na yalikuwa na ubora duni. 