决定性的英文：
decisive
conclusive

参考例句：

A stabilized economy is a determining factor in stabilizing the political situation.
稳定的经济对稳定政局有决定性的作用。

Sihanouk might emerge in an important, perhaps decisive, role as a link between contending forces and as their balancer
西哈努克就有可能作为两个对立势力之间的联结人和平衡者发挥重要的，也许是决定性的作用。

The deciding factor; the deciding vote.
决定性的因素;决定性的一票

the determinative battle.indecisive
决定性的战役

Crisis planning
决定性部署

a fateful battle
决定性的战斗

Conclusive presumption
(不容反驳的)决定性推断

a fateful decision to counterattack.
反攻的决定性决策

There is a final, conclusive point.
还有最终的、决定性的一点。

Of decisive importance;fateful.
决定性的有决定的重要性的;重大的

decisive是什么意思：
adj. 决定性的；关键的

Encouraged by the spirit of the spider, Bruce decied to try again.
受到那蜘蛛精神的鼓舞(鼓励),Bruce决定再试一次.

Such is their decision.
他们的决定就是这样。

A court decision.
判定，判决法庭决议，裁决

reserve decision
推迟判决

It was a collective decision.
这是集体的决定。

conclusive是什么意思：
adj. 确凿的，不容置疑的；决定性的

Don't rush to a conclusion.
不要急于下结论。

The conclusion, as of a syllogism or a conditional sentence.
结论结论，如三段论中的推断或条件句中的结论句

His conclusions are purely speculative.
他做出的结论纯粹是推测而来的。

There is a final, conclusive point.
还有最终的、决定性的一点。

Defeat is a foregone conclusion.
战败 [失败] 是早已看出的结果 [已成定局] 。