<prompt> Translate the following text to SwahiliMadeiras system of irrigation channels, known as levadas, carries water down from the mountains on gentle gradients and provides a ready-made system of trails.  <response>: Mifereji ya umwagiliaji maji ya Madeira, inayoitwa levadas, husafirisha maji kutoka milimani kwa mteremko laini na hutoa mfumo wa njia zilizotengenezwa tayari. 