A unit of matter, the smallest unit of an element, having all the characteristics of that element and consisting of a dense, central, positively charged nucleus surrounded by a system of electrons.
物质的单位、元素的最小单位，有该元素的全部特征，由中部密集的、带有正电的原子核及绕原子核的一系列电子组成。
In addition, typed arrays are dense, that is, every index in the allowed range refers to an element.
此外，类型化数组是“稠密的”，即在允许的范围内的每个索引都引用一个元素。
It seemed as if I might next cast my line upward into the air as well as downward into this element which was scarcely more dense.
我仿佛会接着把钓丝往上甩，甩到天空里去，正如我同时把钓丝垂人这密度未必更大的水的元素中去的情况一样。
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