pivot pier protection

例句：

1. 1.The pivot point of the project is to improve efficiency.
   该项目的支点是提高效率。
2. 2. The pivot pier was damaged during the storm.
   风暴期间，支点桩受损了。
3. 3. The safety measures for the pivot pier protection are well-implemented.
   对支点桩的保护措施执行得很好。