cut section rail circuit

例句：

1. 1. The engineercarefully cut the section of the bridge tomake it more stable.
   工程师小心翼翼地切割桥梁的部分，使其更加稳定。
2. 2. Thenew rail circuit has improvedthe efficiency of the train operation.
   新的轨道电路提高了火车运行的效率。
3. 3.The cutting section was made from high-quality steel, ensuring long lifespan.
   切割部分由高质量的钢材制成，确保了长久的使用寿命。