<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.kwa mtazamo wa ufanisi wa gharama ikiwa utafanya tafiti nyingi kwa faida tofauti za ushirikiano, sio mzigo tu kwa watengenezaji wa mradi, gharama ya kutekeleza kwamba masomo mengi yatakuwa ghali bila kutarajia, alisema li.  <response>: from a cost-efficiency point of view if you conduct multiple studies for different co-benefits, its not just a burden on the project developers, the cost of carrying out that many studies would be prohibitively expensive, said li. 