就它们与恒星的距离而言，其石质行星核恐怕需要极其长的成型时间，以至于在星核能够俘获气体前周围的气态盘恐怕就已经消散殆尽了。
At their distances from the star, the rocky planetary core would have taken so long to form that the gaseous disk would have dissipated before the core could attract the gas.
当一个中子轰击一个原子核的时候，这个核可能会俘获这个中子，从而变的极不稳定。
When a neutron hits an atomic nucleus, the nucleus can absorb the neutron and become unstable.
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