decisiveKK [dɪˋsaɪsɪv] /dɪˈsaɪsɪv/形容詞1決定性的、關鍵的Her testimony played a decisive role in the whole case.她的證詞在整起案件中起了決定性的作用。2果斷的、堅決的A good manager has to be decisive under pressure.好的主管必須在壓力下保持果斷。3明確的、無庸置疑的The team won by a decisive margin of twenty points.該隊以二十分的明顯差距獲勝。