<prompt> Translate the following text to SwahiliCheap oral hydration, for example, has been studied and used to treat dehydration for diarrheal illness in developing countries.  <response>: Kwa mfano, dawa ya kupunguza maji mwilini kwa kutumia mdomo imechunguzwa na kutumiwa kutibu ugonjwa wa kuhara katika nchi zinazoendelea. 