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1.The study of the atomic nucleus is crucial for understanding the structure and properties of matter.
研究原子核对于理解物质的结构与性质至关重要。
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2. The neutron-core of the reactor is essential for its operation.
反应堆的中子核是其运行所必需的。
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3. The discovery of a new element with a unique nuclear structure has sparked excitement in the scientific community.
发现一种具有独特核结构的新元素，在科学界引起了兴奋。