<prompt> Translate the following text to EnglishWakati Ziwa Nasser lilipotisha kufurika katika miaka ya 1970, wahandisi walikuwa na kazi ya kutisha ya kutunga mpango wa kuokoa, na walifanya hivyo kwa ustadi mkubwa.  <response>: When Lake Nasser threatened to flood the complex in the 1970s, engineers had the unenviable task of formulating a plan to save it and this they did with consummate skill. 