contingent fee

基本解释

Contingent fee system originated from U. S. A. It's currently the more popular legal charging method internationally.
起源于美国，是目前国际间较为流行之律师收费制度。
According to a teacher at a local high school, a middle school diploma is contingent on sitting for the high school entrance exam, which carries a 650-yuan fee.
一名当地中学教师告诉记者，要取得初中毕业证书就必须参加中考，考试费用是650元。
Such approval will not be contingent upon the payment of any fee or royalties to YYY; however, the cost of obtaining and maintaining such new trademarks shall be borne solely by the Company.
公司不需要支付任何费用和许可费，但获得和维持该商商标的费用由公司自行承担。

Trolls capture economies of scale in litigation, and lower their committed capital by using contingent fee lawyers.
FORBES: Turn The Tables On Patent Trolls
Some question whether these restrictions on contingent fee work are fair or legal.
FORBES: Can Lawyers or Accountants Do Your Taxes on Contingency?
Tax practitioners may charge a contingent fee for services rendered in connection with any judicial proceeding arising under the Internal Revenue Code.
FORBES: Can Lawyers or Accountants Do Your Taxes on Contingency?