It refers to a volunteer that some candidates re-fill in after being told when taking the college entrance examination, because the zero volunteer, the first volunteer and the second volunteer that were previously filled in have been accepted, and there is no enrollment quota. This volunteer is called a makeup volunteer.
When some candidates take part in the college entrance examination, because the zero-volunteer, the first-volunteer and the second-volunteer have been admitted, there is no enrollment quota.
After being told, the candidate re-filled in a volunteer. The college entrance examination voluntary reporting is a new way to make up for the shortage of randomly adjusting candidates' situation in college entrance examination enrollment.