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

They fought a decisive battle [fight, war].

他们打了决定性的一仗。

youdao

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

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The guidelines Pirelli received from the sport's brass called for more days like the 2010 Canadian Grand Prix, a race where tire strategy became decisive for Lewis Hamilton in winning a five-way battle.

WSJ: Tire Trauma as Formula One Stars Feel Heat