classes:  lecturer. Practice room should equipped with new machines, it is really uncomfortable when practicing that the machine hangs, the machine breaks.  curriculum. Practice room should equipped with new machines, it is really uncomfortable when practicing that the machine hangs, the machine breaks.  facility. Practice room should equipped with new machines, it is really uncomfortable when practicing that the machine hangs, the machine breaks.  general. Practice room should equipped with new machines, it is really uncomfortable when practicing that the machine hangs, the machine breaks.