nucleus基本解释
n,[核][天][生物]核，核心；原子核,同近
Neutrons and protons are bound together in the nucleus of an atom..在一个原子的核内，中子和质子聚合在一起。
原子核，细胞核英释nnThe nucleus of an atom or cell is the central part of it.
cell nucleus,细胞核.短语
