Various types of symmetries and broken symmetries are part of our everyday life;the letter A does not change when we look at it in a mirror, while the letter Z breaks this symmetry.

• 有很多种对称性和对称性破缺是我们日常生活的一部分，字母A与他的镜子里的样子是一样的，而字母Z就破坏了这种对称性。