After losing this decisive battle, the general was forced to concede.

输掉了这场决定性的战役后，那位将军不得不承认失败。

《牛津词典》

They are ready to fight a decisive battle.

他们做好会战的准备。

《新英汉大辞典》

Tomorrow there would be a decisive battle.

明天将有一场决定性的战斗。

youdao

In 2009,Russians marked 300 years since their country defeated Sweden in the decisive Battle of Poltava, in which Russia replaced that Scandinavian country as the great power of Northern Europe.

VOA: standard.2009.12.25

In 378, Roman Emperor Valens attacked the Visigoths in the decisive battle of Adrianople.

CNN: Sunday,

There is a great and perhaps decisive battle to be fought against ignorance, intolerance and indifference.

FORBES: Up for Debate: How Storytelling Can Effect Change

Innovative and energetic, Scipio dramatically changed Roman military strategy and tactics, ultimately out-Hannibaling Hannibal at the decisive battle of Zama.

FORBES: Fact and Comment