even-controlled gate

例句：

1. 1. The engineer designed an even-controlled gate to ensure safe passage for pedestrians.
   工程师设计了一个平衡门，以确保行人的安全通行。
2. 2. In the construction of the bridge, the even-controlled gate is crucial for maintaining its stability.
   在桥梁的建设中，平衡门对于保持其稳定性至关重要。
3. 3. The even-controlled gate was installed to prevent vehicles from entering the restricted area during peak hours.
   安装平衡门是为了在高峰时段防止车辆进入限制区域。