This implies that it is not possible that the centrifugal force is provided by the universal gravity.
这说明该向心力不可能是由万有引力提供的。
Unfortunately, there is no place, yet, for the fourth universal force, gravity.
遗憾的是，目前在表格中还没有第四种力，引力的位子。
If a theory can be designed to withstand the incredible energies of the early universe as well as incorporate gravity, Jackson said, then a universal theory of physics could become a reality.
Jackson说，如果一个理论可以设计来经得起对早期宇宙的不可思议力量以及具体化的重力的推敲，那么一个物理学的宇宙理论就可能变为现实。
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