safety locking screw

例句：

1. 1. The car's engine is a safety locking screw that must be tightened before driving.
   这辆车的引擎是一个安全锁紧螺丝，必须在开车前拧紧。
2. 2. The construction worker used a safety locking screw to secure the ladder in place.
   建筑工人使用一个安全锁紧螺丝来固定梯子。
3. 3.The engineer tested the safety locking screw for its ability to withstand impact forces.
   工程师测试了安全锁紧螺丝，以检验其承受冲击的能力。