ineffectiveadj.无效的;无能的;效率低的
ineffective supply无效供给
ineffective demand无效需求
ineffective efforts努力无效
ineffective learner学困生
ineffective protest无效的抗议/反抗
ineffective traffic无效话务量
ineffective air time无效广播时间
ineffective teaching无效教学
ineffective contract[法] 无效合同
ineffectiveness rate失效率
"he dealt with the problem rather ineffectively"