In the adjustment process of the biological behavior, environmental stress threshold is probable the decisive role of biological behavior changes.

在生物行为调节过程中，环境胁迫阈对生物行为变化可能具有决定性作用。

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Interest rate parity theory is the basic theory describing the decisive role of divergence in domestic and foreign interest rates to currency exchange rate of a country.

利率平价理论是阐述国内外利率水平差异对一国货币汇率起决定作用的基本学说。

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My friends, the momentous trials of the last century, and the unfolding events of this century, attest to the decisive role of the United States in advancing peace and defending freedom.

我的朋友们，上一世纪的这一重大考验，本世纪正在展开的事件，都证明美利坚合众国对推动和平和捍卫自由起着决定性的作用。

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In remarks offered on the occasion of his receiving the Center for Security Policy's annual "Keeper of the Flame" award, Kasparov spoke of the decisive role in the destruction of Soviet communism played by President Harry Truman's policy of containment and President Ronald Reagan's Strategic Defense Initiative.

CENTERFORSECURITYPOLICY: Center For Security Policy

The warrior spirit, so evident Sunday night, plays a decisive role in the lives of line soldiers and their commanders.

CENTERFORSECURITYPOLICY: Of men and mice

As the chief policeman for unfair state aid in the 27-country EU, he will also play a decisive role in the overhaul of troubled Spanish banks and the setting up of a new, powerful banking supervisor for the euro zone.

WSJ: Economics Guru Jumps