a breed of dog的用法和样例：
- Spaniel is a breed of dog with large ears.
- Any of a breed of dog originating in Belgium and having a short,bearded muzzle.
- Any of a breed of dog originating in the Netherlands and having a thick grayish-black coat.
- The first "chow" (often in the double form "chowchow") is a breed of dog which originated in China.
- The Dalmatian is a breed of dog, noted for its white coat with either black or liver spots.