在一个原子的核内，中子和质子聚合在一起。
Neutrons and protons are bound together in the nucleus of an atom.
对核运行费用的计算因其他燃料费用的下降而出现了偏差。
The arithmetic of nuclear running costs has been skewed by the fall in the cost of other fuels.
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。
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.
皮诺乔一眨眼就吃了一个梨，正要把梨核扔掉，杰佩托却抓住他的胳膊。
Pinocchio ate one pear in a twinkling and started to throw the core away, but Geppetto held his arm.
这种金属核赋予地球特有的磁场，在地球的历史上发挥了极其重要的作用。
This metallic core gives Earth its characteristic magnetic field, which has played an extremely important role in the history of our planet.
星期四美国国务卿约翰·克里与美国参议院议员就伊朗核协议进行了首次公开辩论。
Secretary of State John Kerry debated with members of the U.S. Senate Thursday in the first public hearing on the Iran nuclear deal.
重水之所以重是因为水中氢的重量是普通氢的两倍（它的原子核中有一个质子和一个中子，而不仅仅是一个质子）。
Heavy water is heavy because the hydrogen in it weighs twice as much as ordinary hydrogen (it has a proton and a neutron in its nucleus, instead of just a proton).
我们的大脑由原始的内核和进化程度更高、更具理性的外核组成。
Our brains are made up of a primitive inner core and a more evolved and rational outer core.
这么大的原子核不可能是稳定的，但在足够长的时间内，在真空附近组装一个原子核以观察真空的衰变是可能的。
A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum.
一旦合成，组蛋白就会进入细胞核，细胞核内的DNA片段会将组蛋白包裹起来，形成一种类似串珠或绳结的结构。
Once synthesized, the histones move into the cell nucleus, where a section of DNA wraps around them to form a structure that resembles beads, or knots, on a string.
反核示威者认为，切尔诺贝利核电站核泄漏事故清楚地表明他们的反核运动是正确的。
Anti-nuclear protesters regarded the Chernobyl accident as a clear vindication of their campaign.
印象派绘画的模糊图像似乎会刺激大脑的杏仁核。
The blurred imagery of Impressionist paintings seems to stimulate the brain's amygdala.
梅子里面有核。
地球磁场由地球外核中的电流产生。
The Earth's magnetic field is generated by currents flowing in Earth's outer core.
第五，大力加强核安全，切实减少核风险。
Fifth, take strong measures to enhance nuclear security and reduce nuclear risks.
保证核材料安全——外交官与军人的共同使命。
Keeping nuclear materials safe-a job for diplomats as well as soldiers.
加强核安全符合各国共同利益，需要我们携手努力。
Enhanced nuclear security serves the interest of all countries and requires concerted action.
甚至可能辨认出如细胞核、线粒体、叶绿体等细胞结构。
It's even possible to make out structures within the cell, such as the nucleus, mitochondria and chloroplasts.
无论涉核与否，世界各地的冷却塔俨然已经成为发电站的象征。
Cooling towers have come to symbolize power plants - nuclear or not - around the world.
更重要的是，这些区域包括掌管生物钟的视交叉上核。
More important, these regions included the suprachiasmatic area, which is home to the body's circadian clock.
核聚变中，小原子核相互碰撞，形成大原子核，释放能量。
Fusion involves colliding small atomic nuclei together to form larger ones, and thus releasing energy.
当睡眠压力增加时，视交叉上核会发送信号以提高警觉性。
This area sends signals to boost alertness as the pressure to sleep mounts.
中方鼓励伊继续与机构全面合作，增进国际社会对其和平核活动的信任。
The Chinese side encourages Iran to continue its full cooperation with the Agency so as to increase confidence of the international community in its peaceful nuclear activities.
核管理委员会不仅签发核运营许可证，还负责该行业的安全监督。
The NRC not only gives out nuclear licenses but is the industry safety watchdog.
从最通俗的角度讲，核反应实质上就是发生在原子核中的一种反应过程。
A nuclear reaction is at its most basic nothing more than a reaction process that occurs in an atomic nucleus.
从最通俗的角度讲，核反应实质上就是发生在原子核中的一种反应过程。
A nuclear reaction is at its most basic nothing more than a reaction process that occurs in an atomic nucleus.
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