nucleusKK [ˋnukliəs] /ˈnukliəs/名詞1原子核物理The nucleus of an atom contains protons and neutrons.原子核裡含有質子和中子。2細胞核生物Most of a cell's DNA is stored inside the nucleus.細胞的DNA大多儲存在細胞核裡。3核心、中心、骨幹These five players form the nucleus of the team.這五名球員是球隊的核心。4彗核天文The comet's nucleus is only a few kilometers across.那顆彗星的彗核直徑只有幾公里。