<prompt> Translate the following text to SwahiliCeterns, some of them dating from Moorish times, catch whatever rain falls from the sky, and when needed, supplementary water supplies are shipped in to this desert island.  <response>: Mto huo unaitwa Ceterna, ambao baadhi yao ni wa enzi za Waarabu, na unashikilia mvua yoyote inayoshuka kutoka angani, na inapohitajika, maji ya ziada husafirishwa kwenye kisiwa hicho kisicho na watu. 