无与伦比，无可比拟
to be something of such a high quality that nothing can be compared to it
In New York, it is clear that Dominican hair salons are in a class of their own.
The versatility of this computer puts it in a class be itself.
These aircraft are in a class of their own, being small yet extremely fast.
The city's orchestra is in a class by itself.
This business is in a class by itself for customer choice and delivery options.
See also: class noun (RANK)