translation.en: What Galois realized: it isn't just the individual symmetries, but how they interact with each other which really characterizes the symmetry of an object.
translation.zh: 伽罗瓦意识到这不仅仅是个体的对称性， 而是个体之间如何相互作用 才真正赋予了一个物体具有对称性的特点。