personnel是單數還是複數

是單數，意思是人事部門，例如：

1、There has been very little renewal of personnel in higher education從事高等教育的人員新老更替極其緩慢。

2、They lacked the scientific personnel to develop the technical apparatus much further.他們缺少能夠進一步研發這一技術裝置的科研人員。

3、Address your application to the Personnel Manager.把你的申請信寄給人事經理。