call upon片语动词KK [kɔl əˋpɑn] /kɔl əˈpɑn/发音片语动词1呼吁、号召、要求正式The report calls upon the government to raise the minimum wage.该报告呼吁政府提高最低工资。2求助于、动用、仰赖She had to call upon all her patience to finish the project.她必须拿出全部的耐心才能完成这个专案。3请、邀请The chairman called upon the treasurer to present the accounts.主席请财务主管报告帐目。4拜访、探访旧式He called upon his aunt every Sunday afternoon.他每周日下午都去拜访他的姑妈。用这个字练口说→