Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob.
四种基本力（万有引力、电磁力、强核力和弱核力）中的每一种都有一个理论上的旋钮。
Both sides put their nuclear forces in high alert.
双方的核力量都在高度戒备中。
One of the most exciting ideas in modern physics is that gravity is not a traditional force, like electromagnetic or nuclear forces.
现代物理学最令人兴奋的观点之一是重力不是像电磁力和核力一样是传统力。
Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob that can be turned up or down to change its strength.
四种基本力(重力，电磁力，强作用力和弱作用力)都有一个理论把手，调节这东西可以改变力的强度。
They are unable to counter the nuclear forces of the United States and the SovietUnion both in scale and in quality, but they will not lose their deterrent role in a long period of time to come.
无论从规模或质量来看，它们均无法与美苏核力量抗衡，但它们在今后较长时期内不会失去威慑作用。
The two countries agreed in 1987 under the Intermediate-range Nuclear Forces treaty to not possess, produce or flight-test any ground-launched missiles that could fly between 500 and 5,500 kilometers.
美俄两国在1987年根据“中程核力量条约”同意不拥有、不生产或不试飞任何航程可达500至5500公里的从地面发射的导弹。
By calling them “weakly interacting”, physicists mean that the particles experience another of the four fundamental forces, namely, the weak nuclear force that is responsible for radioactive decay.
之所以称其为“弱作用”，是为了指出粒子受到四大基本力中的另一种——由放射性衰变所产生的弱核力（四大基本力是：引力、电磁力、强力、弱力）。
Man is not immune to the forces of nature; Japan, if it can prevent nuclear catastrophe, may very well come as close as any human society ever has.
人类不能逃脱大自然强大的野蛮力量；如果日本能防止核灾难的发生，很容易就能恢复以往的繁荣了。
Recall one of the key issues is nuclear plants have to meet certain standards as a result of their design which forces the design to look a certain way.
回想其中一个重要的点就是核电站，必须要满足它们设计的标准，那使得设计通过某种方式来观察。
Compared with the other three forces in the universe (electromagnetism, the weak nuclear force and the strong nuclear force), gravity is relatively feeble, making gravitational waves hard to detect.
和宇宙中的其他三种力(电磁力、弱核力、强核力)相比，重力就微弱得多了，所以引力波很难被观测。
Well, as you all know, there are four fundamental forces in physics: electromagnetism, strong nuclear interaction, weak nuclear interaction and gravity.
众所周知，在自然界中有四种基本的相互作用力：电磁力、强相互作用力、弱相互作用力和万有引力。
Scientists believe that gravity, electromagnetic force, strong nuclear force and weak nuclear force are the Four Basic Forces of the universe.
科学家们认为，万有引力、电磁力、弱力和强力是宇宙中的四种基本作用力。
But people with dual nationalities have been more frequently targeted by Iranian security forces since the nuclear deal was reached last year.
不过，自从去年达成核协议以来，伊朗安全机构更经常地打击拥有双重国籍的人士。
But people with dual nationalities have been more frequently targeted by Iranian security forces since the nuclear deal was reached last year.
不过，自从去年达成核协议以来，伊朗安全机构更经常地打击拥有双重国籍的人士。
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