“内部的”的英语可以翻译为：inner，inside，[计] in-house，internally，intestine ...

核子内部的斥力是巨大的。The repulsive force within the nucleus is enormous.核反应堆内部的剖面图a cutaway picture of the inside of a nuclear reactor俱乐部的宗旨是促进团体内部的关系。The club's aim is to foster better relations within the community....