关键要件之一，就是扩大合格外勤服务工作人员的储备库并使之多样化。

A key element is to increase and diversify the pool of qualified staff for field service.

youdao

关键要件之一，就是扩大合格外勤服务工作人员的储备库并使之多样化。

A key element is to increase and diversify the pool of qualified staff for field service.

youdao