a high-backed sofa的用法和样例：
- "Choose one with a high back and an inherent sense of softness about the upholstery for visual warmth and comfortable seating," Rascoe recommends.
- A rocking chair having a high back with spindles, a decorative panel at the top, and a seat and arms that curve downward in front.
- The medieval town was fortified with a high wall and a deep moat.
- I set a high value on his advice.
- A high wall fetched in an ancient small town.