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1.The atomic core is the part of an atom that contains the protons and neutrons.
原子核是包含质子和中子的原子部分。
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2.The study of atomic nuclei has led to important discoveries in physics.
研究原子核的研究在物理学中取得了重要的发现。
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3. The atomic core is a crucial component of many chemical reactions.
原子核是许多化学反应的关键组成部分。