outside-service prisoner

例句：

1. 1. Theprisoner was released after serving his sentence.
   这名囚犯在服刑期满后被释放。
2. 2.The outside-service prisoner is allowedto exercise in the yard.
   外部服务囚犯可以在院子里锻炼身体。
3. 3. The outside-service prisonerhas been given access to educational materials.
   外部服务囚犯已被允许接触教育资料。