accident
教育科学

        n. 事故,意外‖ accident insurance意外保险accident rate事故率industrial accident 工业事故traffic accident交通事故accidental abortion意外流产accidental error偶然误差accidental fluctuation偶然波动accidental pregnancy意外怀孕accidental sampling偶然抽样accidentalism......（本文共 231 字）     [阅读本文] >>