used to refer to something that you contribute to捐献的;奉献的
The company offers a contributory pension plan (= one to which both the employee and employer pay money).该公司实行雇主和雇员共同缴存养老金计划。
helping to cause something起作用的;导致…的;促成的
Too little exercise is a contributory factor in heart disease.缺乏锻炼是引起心脏病的一个因素。