helping to cause sth 促成的；起作用的◆The bad weather was a contributory factor in the fall in sales. 气候恶劣是造成销售额下跌的一个因素。
involving payments from the people who will benefit 需要受益人出资的◆a contributory pension plan/scheme(= paid for by employees as well as employers) 由雇员和雇主共同出资的养老金计划OPPnon-contributory