夸克是这种物质的最基本构造块之一，它被胶子束缚在一起形成亚原子粒子“混合物”，如质子和中子。
One of the fundamental building blocks of matter, called quarks, are bound together by gluons to form 'composite' subatomic particles such as protons and neutrons.
聚变后形成氦以及一种称为“中子”的亚原子粒子。
They would form helium and a subatomic particle, called a neutron.
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