<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?kwa mujibu wa tafiti iliyofanywa mwezi wa pili na kampuni ya kiingereza, eca international - mji wa luanda ni wa kwanza kati ya miji ghali kupita yote duniani.  <response>: according to a survey conducted in february by an english company, eca international - luanda ranks first among the most expensive cities in the world. 