decisive set

例句：

1. 1. The decision was made by the decisive leader of the team.
   这个决定是由团队中果断的领导者做出的。
2. 2. His decisive action saved the company from bankruptcy.
   他的果断行动使公司免于破产。
3. 3. The decisive factor in this case was the weather.
   在这个案例中，决定性的因素是天气。