She has played a decisive role in the peace negotiations.

她在和谈中起了关键作用。

《牛津词典》

State governors, who appoint election officers, play a decisive role.

州长们，也就是任命选举官员的人，在其中扮演至关重要的作用。

youdao

They play a decisive role in almost all plant growth processes, including the shade avoidance reaction.

基本上在所有植物的生长进程中都起着关键的决定作用，包括植物的荫蔽躲避反应。

youdao

But the fact is that economics has played a decisive role in all of them.

CENTERFORSECURITYPOLICY: Caution: Storm Approaching

But in an interview with Newsweek and Associated Press Radio she denied having a decisive role.

CNN: Hillary Clinton called on carpet in twin investigations

Science and technology play a decisive role in better protecting and sharing resources and preventing risks associated with water.

UNESCO: Indigenous Peoples