a deep-pile carpet的用法和样例：
- Snowdift: n A snowdrift is a deep pile of snow formed by the wind.
- A carpet with a deep, tufted pile.
- The medieval town was fortified with a high wall and a deep moat.
- A deep gorge separates the two halves of the city.
- A deep ravine is on the left of the road.
- A deep melancholy runs through her poetry.