PNA

例句：

1. 1.The PNA is responsible for the safety of all employees.
   PNA负责所有员工的安全。
2. 2. The accident was caused by a malfunctioning piece of machinery.
   事故是由一台机器故障引起的。
3. 3.PNA provides training to employees on how to handle emergencies.
   PNA为员工提供培训，教授他们如何处理紧急情况。