<prompt> Translate the following text to EnglishMchanganyiko maalum wa vifaa vilivyochaguliwa kwa kupunguza zebaki katika kituo fulani huamuliwa sana na vifaa na hali zilizopo katika kituo hicho.  <response>: The particular combination of equipment chosen for mercury reduction at a particular facility is largely determined by the existing equipment and conditions at the facility. 