听力文本
Finally, to those nations who would make themselves our adversary, we offer not a pledge but a request: that both sides begin a new quest for peace, before the dark powers of destruction unleashed by science engulf all humanity in planned or accidental self-destruction.

We dare not tempt them with weakness. For only when our arms are sufficient beyond doubt can we be certain beyond doubt that they will never be employed.

But neither can two great and powerful groups of nations take comfort from our present course -- both sides overburdened by the cost of modern weapons, both rightly alarmed by the steady spread of the deadly atom, yet both racing to alter that uncertain balance of terror that stays the hand of mankind's final war.

So let us begin anew—remembering on both sides that civility is not a sign of weakness, and sincerity is always subject to proof. Let us never negotiate out of fear, but let us never fear to negotiate.

Let both sides explore what problems unite us instead of belaboring those problems which divide us.

Let both sides, for the first time, formulate serious and precise proposals for the inspection and control of arms, and bring the absolute power to destroy other nations under the absolute control of all nations.

Let both sides seek to invoke the wonders of science instead of its terrors. Together let us explore the stars, conquer the deserts, eradicate disease, tap the ocean depths, and encourage the arts and commerce.

Let both sides unite to heed, in all corners of the earth, the command of Isaiah— to "undo the heavy burdens, and let the oppressed go free."

And, if a beachhead of cooperation may push back the jungle of suspicion, let both sides join in creating a new endeavor -- not a new balance of power, but a new world of law -- where the strong are just, and the weak secure, and the peace preserved.

All this will not be finished in the first one hundred days. Nor will it be finished in the first one thousand days; nor in the life of this Administration; nor even perhaps in our lifetime on this planet. But let us begin.
参考译文
最后，对那些想与我们作对的国家，我们提出一个要求而不是一项保证：在科学释放出可怕的破坏力量，把全人类卷人到预谋的或意外的自我毁灭的深渊之前，让我们双方重新开始寻求和平。

我们不敢以怯弱来引诱他们。因为只有当我们毫无疑问地拥有足够的军备，我们才能毫无疑问地确信永远不会使用这些军备。

但是，这两个强大的国家集团都无法从目前所走的道路中得到慰藉—发展现代武器所需的费用使双方负担过重，致命的原子武器的不断扩散理所当然使双方忧心忡忡，但是，双方却在力求改变制止人类发动最后战争的不移定的恐怖均势。

因此，让我们双方重新开始—双方都要牢记。礼貌并不意味着怯弱，诚意永远有侍于验证。让我们决不要由于畏惧而谈判。但我们决不能畏惧谈判。

让双方都来探讨使我们团结起来的问题，而不要操劳那些使我们分裂的问题。

让双方首次为军备检查和军备控制制订认真而又明确的提案，把毁灭他国的绝对力量置于所有国家的绝对控制之下。

让双方寻求利用科学的奇迹，而不是科学造成的恐怖。让我们一起探索星球，征服沙漠，根除疾患，开发深梅，并鼓励艺术和商业的发展。

让双方团结起来，在全世界各个角落倾听以赛亚的训令—“解下轭上的枷锁，让被欺压得自由。”

如果合作的滩头阵地击退猜忌的丛林，那么就让双方共同做一次新的努力：不是建立一种新的均势，而是创造一个新的法治世界，在这个世界中，强者公正，弱者安全，和平将得到维护。

所有这一切下可能在第一个一百天内完成，也不可能在第一个一千天或者在本届政府任期内完成，甚至也许不可能在我们居住在这个星球上的有生之年内完成。但是，让我们开始吧。
词语解释
1. adversary n. 敌手;敌人

He defeated his old adversary.
他击败了他的老对手。

2. engulf v. 吞没;卷入

His lean body be engulf In an Ivory white afghan coat
他瘦削的身躯裹在一件象牙色的阿富汗大衣中

3. atom n. 原子

He didn't know that the atom bomb would work.
他不知道原子弹能解决问题。

3. alter v. 改变

She had to alter her clothes after losing weight.
她瘦了以後, 衣服也得修改了。

4. civility n. 礼貌,客气,谦恭

She turned up her nose at my civility.
我献殷勤时，他翘起了鼻子。

5. sincerity n. 真实;诚心诚意;纯真

I can assure you of his sincerity.
我可以向你保证他的诚恳。

6. belabor v. 反复研究(或讨论)

Don't belabor the point.
别再罗嗦这事儿了。

6. eradicate v. 连根拔除,根绝;消灭

The government is making efforts to eradicate racial discriminating.
政府正在努力消除种族歧视。