a precast bridge的用法和样例：
- Prestressed pipe pile is a precast pile, which has many merits, such as high bearing capacity, high degree industrialization and convenience construction, and it is widely used in engineering now.
- It's a bridge of steel framework.
- Henry is a past master at bridge.
- The bridge crosses the river in a single span.
- There's a bridge a mile down the river from here.