sliding scale

1. N-COUNT Payments such as wages or taxes that are calculated on a sliding scale are higher or lower depending on various different factors. 計(jì)算尺; (工資或稅率等的)按比例增減

Many practitioners have a sliding scale of fees. 許多從業(yè)者都有收費(fèi)的一種比例標(biāo)準(zhǔn)。