locking latches

例句：

1. 1. The car has a sophisticated locking system that ensures the doors are securely locked.
   这辆车有一个复杂的锁系统，确保车门被安全锁住。
2. 2. The engineer designed a locking mechanism to prevent unauthorized access to the building's main entrance.
   工程师设计了一个锁机制，以防止未经授权的人员进入大楼的主要入口。
3. 3. The security guard used a locking device to secure the perimeter of the facility.
   保安使用一个锁设备来加固设施的外围。