[] a system of taxes, wages, etc. in which amounts paid increase or decrease in relation to changes or differences in sth else （税收、工资等按情况变化而调整的）浮动计算（法）◆a sliding scale of charges based on frequency of use 根据使用频率调整的浮动费用◆Personal tax is calculated on a sliding scale. 个人税按收入高低进行计算。