<prompt> Translate the following text to EnglishKwa mujibu wa makadirio ya uhandisi, gharama ya matengenezo ya kucheleweshwa inatofautiana kutoka 75 hadi 100 milioni katika mwaka wa 1999.  <response>: On the basis of engineering estimates, the estimated cost of deferred maintenance ranges from 75 to 100 million in 199Z. 