So it's not entirely impossible that free-floating planets have hot cores, cold surfaces, and an intermediate layer, where water could exist in some fluid form.
所以，存在一种可能，不受约束的漫游星有炙热的内核，寒冷的表层，和一个特别的中间层，在那水是液态的。
2
Treaties at the end of the cold war led to the decommissioning of thousands of warheads. Their energy-rich cores are converted into civilian reactor fuel.
冷战结束后的条约导致几千弹头退役—这些丰富能源的弹头转化成民用核反应堆燃料。
3
Based on domestic materials used in the Phenolic Urethane Cold Box Process (PUCB), the relationships between coremaking parameters and the properties of cores have been studied.