How the simple symmetry and its breaking evolves during the growth of the embryo is intriguing.
在胚胎发育过程中这种简单对称和变异是如何演化的，这是个很引人入胜的问题。
2
In the framework of the standard model ofsymmetrybreaking explained, but the need to be extended to three quark model family.
他们在标准模型的框架下对对称破缺进行了解释，但是需要将模型扩展至三个夸克家族。
3
We find that the spontaneous breakingof gauge symmetry and supersymmetry can be realized, but it is difficult to make the quarks and leptons to acquire small masses.