基本解釋n.無效(不成功；無益)同根派生 ineffectualness相關(guān)詞英漢例句A Simple Analysis of Tool Ineffectualness Factors 模具失效因素淺析Causes of Container Ineffectualness and Prevention Measures 擠壓筒損壞原因分析及其預(yù)防措施ineffectualness更多例句