However, of the four fundamental forces, gravity is by far the weakest, and it took until 2002 before gravity's quantum nature was proven.

然而，四种基本力中，引力是至今发现最弱的一个。而且直到2002年，引力的量子特性才被证明。

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In some sense, previous attempts at unifying the forces of nature failed because a standard four dimensional theory is "too small" to jam all the forces into one mathematical framework.

从某种意义上说，在统一以前的自然力量的尝试失败，因为一个标准的四维理论是“太小”干扰到一个数学框架内的一切力量。

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Equally importantly, the Higgs allows two of the four forces in nature -- the electromagnetic force and the weak force, which is responsible for most nuclear reactions -- to be unified and described by mathematics of the same type that describe the other two known forces, the so-called strong force and gravity.

CNN: Higgs and the holy grail of physics

And the owners of four of the most vulnerable bungalows fear their homes may be claimed by the forces of nature before that choice becomes an issue.

BBC: Knipe Point cliff homes threatened by new landslip