staff with a key

例句：

1. 1. The staff at the hotel were very helpful and friendly.
   酒店的员工非常乐于助人且友好。
2. 2. The new manager has a lot of experience in staff management.
   新任经理在员工管理方面有很多经验。
3. 3. The company needs to improve its staff training program.
   公司需要改进其员工培训项目。