First, the weapons should be intended for use only in retaliation after a nuclear attack. Second, the possession of the weapons must be a temporary expedient.
首先，这些武器应当只在遭受核袭击后反击时才使用。其次，这些武器的拥有必须是一种临时的应急手段。
He added, at this speed, they will be generating more heat per cubic centimeter than a nuclear reactor.
他补充，在这种速度下，每立方厘米产生的热将超过核反应堆。
The scientist most likely to understand the safety of a nuclear reactor, for example, is a nuclear engineer who declares that a reactor is unsafe.
例如，最有可能理解核反应堆安全性的科学家是宣称反应堆不安全的核工程师。
In order to make a nuclear explosion, the critical mass must come together within a fraction of a millionth of a second.
为促成一次核爆炸，临界质量必须在一百万分之一秒内聚集在一起。
She came forth and walked forward, and I walked forward, and my feelings and tears and the chemical in my brain, you know, it was like a nuclear fusion.
她走出来了，朝我走来，我也朝她走去，我的感情、眼泪和大脑里的化学物质，你知道的：就像发生了一场核聚变。
If somebody knows you have a nuclear weapon in your house, they're going to think twice about breaking in.
如果知道你家里有核武器，他们在破门而入之前肯定会再三考虑。
It's like a rotary phone, where you could turn to a pageboy, or that haircut that looked like a nuclear bomb exploded your bangs, and then the Peter Pan look.
就像个旋转式电话，在那儿你能做个童花头，或者是爆炸式的刘海，再或者一个彼得潘的发型也行。
The phosphorylated SR protein moves into the nucleus then relocates to a nuclear speckle.
老磷酸化蛋白进入细胞核，然后迁至核斑纹。
Other fears about a nuclear Iran are less convincing.
对于核伊朗的其他方面的恐惧就让人不那么信服了。
But the idea of creating a nuclear Armada continued to exist.
但是建立核舰队的愿望依然存在。
Q: Iran said it had signed a nuclear fuel swap deal with Turkey and Brazil.
问：伊朗方面表示，日前已经与土耳其、巴西达成核燃料交换协议。
Like Barack Obama, Mr Romney declares that a nuclear Iran is "unacceptable".
和奥巴马一样，罗姆尼宣称一个拥有核武的伊朗是不可接受的。
A nuclear blast produces a blinding flash, burning heat and crushing wind.
核爆炸会产生眩目的闪光、灼热和具有破坏力的强风。
Uranium 235 — the fuel inside a nuclear reactor — undergoes nuclear fission.
铀235——反应堆中的燃料——经过核裂变。
Ominously, there is new activity, too, at a site used in 2006 for a nuclear test.
更糟的是在2006年进行核试验的地点还有一个新的活跃的试验。
Actually, what I think is: if Leonard Lauder is retired, I'm a nuclear physicist.
实际上，要我说：若是伦纳德·劳德退休，那我就该是核物理学家了。
Now what I'd like to wrap up with is what does all this mean to a nuclear engineer?
现在，我最后要总结的是,这对一个核工程师来意味着什么呢？
He said Japan is coming out of a nuclear disaster and is struggling with low growth.
他还说，日本才要从核灾走出来，正在和低增长率搏斗。
So it's unlkely that there will be a nuclear confrontation ? between India and Pakistan?
所以印度和巴基斯坦之间,不太可能,出现核对抗了？
In a nuclear reactor, it is essential that just the right number of neutrons are present.
在核反应堆中，保持合理数量的中子存在至关重要。
They know that they will be treated differently if they can prove they have a nuclear weapon.
他们知道如果能证明自己拥有核威慑力，整个世界就会用另一种态度来对待他们。
When America wanted a nuclear deal with India, it rode a coach and horses through the NPT.
当美国想与印度做核交易时，直接越过了国际核不扩散公约组织。
Similarly, a nuclear Iran might prompt Saudi Arabia, Turkey, Syria or Egypt to follow suit.
同样的，伊朗的核计划可能促使沙特阿拉伯、叙利亚或埃及依样行事。
"Until we commit to going back to Mars, we're not going to have a nuclear rocket," McDaniel said.
“我们在决定去火星之前，都不会拥有一枚核能火箭。”麦克·丹尼说到。
Fears of a nuclear disaster after Japan's earthquake will harden minds against nuclear power.
日本大地震之后，对核灾难的恐惧将会坚定人们反对核发电的决心。
Scientists will soon be able to observe the first instants after a nuclear warhead detonates.
科学家不久将能观察到核弹头爆炸的第一瞬间。
Mr Amano now wants improved coordination among experts during the early stages of a nuclear crisis.
天野先生现在希望在核危机的早期阶段使专家意见协调。
Mr Amano now wants improved coordination among experts during the early stages of a nuclear crisis.
天野先生现在希望在核危机的早期阶段使专家意见协调。
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