<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.marmaray 2013, ambayo ilijengwa na mbinu ya ndani zaidi ya handaki ya maji ulimwenguni, ilijengwa katika bosphorus, ambayo ni ndoto yetu ya karne na nusu, ambayo inachukuliwa kama mshangao wa uhandisi wa ulimwengu na ambapo mikondo ya mara mbili hufanywa kuzingatia njia za samaki wanaohamia.  <response>: marmaray 2013, which was built with the deepest immersed tube tunnel technique in the world, was built in the bosphorus, which is our dream of a century and a half, which is considered as the engineering wonder of the world and where the double currents are made considering the migration routes of the fish. 