So an example of it is mirror symmetry.

因此，一个典型例子就是镜像对称性。

Did you enjoy the humorous footnote where I illustrate mirror symmetry by likening it to the Flash playing tennis with himself? So funny.

我对镜象对称性作了一个脚注说，把它比喻成闪电和自己打网球，你体会到幽默了吗？太好笑了。

A few years later, this symmetry, mirror symmetry between the sign with the opposite sign was later confirmed by mathematicians.

几年后，这种对称性，即带有相反符号镜像对称性，后来被数学家证实了。