safe length

例句：

1. 1. The car needs to be parked at least a safe length from the building.
   这辆车需要至少停在离大楼一定安全距离的地方。
2. 2. The team decided to move forward with their project, despite the safety length of the road.
   尽管道路的安全距离很长，但团队决定继续推进他们的项目。
3. 3. The engineer carefully measured the safe length of the beam before making any adjustments.
   工程师在做出任何调整之前，仔细测量了梁的安全长度。