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| NOUN |
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| /ˈnjuːkliəs/ |
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| 1 | +of the central or basic part of something 核心；中心 |
| These two groups formed the nucleus of a new political party. 这两个团体组成了新政党的核心。 |
| A nucleus of activist students led the demonstrations. 一个学生积极分子的核心团体领导了这些示威活动。 |
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| 2 | science the central part of an atom , consisting of protons and neutrons 原子核（由质子和中子构成） |
| | 2a | the central part of a living cell , containing the chromosomes 细胞核 | |
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