Fire-check keys

例句：

1. 1.These keys are used to open the safe in the fire department's office.
   这些钥匙用于打开消防部门办公室的保险箱。
2. 2. The fire inspector needs these keys to perform his duties.
   消防员需要这些钥匙来执行他的职责。
3. 3. The keys were given to the firefighters for their safety and to ensure they could access the fire equipment.
   这些钥匙被发给消防员，以确保他们的安全并确保他们能够使用消防设备。