staff是集合名词，本身有复数性质，但是没有复数变化形式。
例句：
She overworks her staff.
她让员工过度劳累。
Staff are suffering from low morale.
员工士气低落。
扩展资料
How many full-time staff have we got?
我们有多少全职员工？
We have 20 part-time members of staff.
我们有20名兼职员工。
More than half the staff are temporary.
半数以上的职员是临时雇员。
