a coat of hair的用法和样例：
- That is a horse with a fine coat of hair .
- This is a coat of her own making.
- This dog has a thick coat of hair.
- The dog has a thick coat of hair.
- Huxley speculated that a coat of hair would insulate against loss of body heat and might streamline the body to reduce drag in flight.
- The horse has a fine coat of hair.