nucleus

US /ˈnuː.kli.əs/
UK /ˈnuː.kli.əs/
"nucleus" picture
1.

核心, 中心

the central and most important part of an object, movement, or group, forming the basis for its activity and growth

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The family forms the nucleus of society.
家庭是社会的核心。
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The city center is the nucleus of economic activity.
市中心是经济活动的核心。
:
corecenterhearthubkernel
2.

原子核

the central part of an atom, containing protons and neutrons

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The atomic nucleus contains most of the atom's mass.
原子核包含原子的大部分质量。
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Nuclear reactions occur within the nucleus.
核反应发生在原子核内。
3.

细胞核

a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material

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The cell's nucleus controls its growth and reproduction.
细胞核控制其生长和繁殖。
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DNA is stored within the nucleus of the cell.
DNA 储存在细胞核内。