<prompt> Translate the following text to SwahiliFor a similar reason the use of the world as a base for interstellar travel, except for trade in certain items, is uneconomical.  <response>: Kwa sababu kama hiyo, kutumia ulimwengu huo kuwa kituo cha kusafiri kati ya nyota, isipokuwa kwa ajili ya biashara ya vitu fulani, si jambo la kiuchumi. 