decisive
1、决定性的,关键的
a decisive factor/victory/battle 决定性的因素/胜利/战役
She has played a decisive role in the peace negotiation
她在和谈中起了关键作用
a decisive step towards a cleaner environment
朝着更清洁的环境迈出的关键一步
2、坚决的,果断的
decisive management 果断的管理层
The government must take decisive action on gun control
政府必须在枪支管制上采取果断措施。