<prompt> Translate the following text to EnglishMfumo wa kufuatilia ruzuku kwa ajili ya ruzuku ya dioksidi ya sulfuri tayari ilianzishwa kwa ajili ya Programu ya Mvua ya Asidi, na kimsingi mfumo huo huo utatumiwa kwa ajili ya mpango mpya wa biashara ya dioksidi ya sulfuri.  <response>: The Allowance Tracking System for sulfur dioxide allowances was already established for the Acid Rain Program, and essentially the same system will be used for the new sulfur dioxide trading program. 