prison camp

1. N-COUNT A prison camp is a guarded camp where prisoners of war or political prisoners are kept. 戰俘集中營; 政治犯營

He was shot down over Denmark and spent three years in a prison camp. 他在丹麥上空被擊落，在戰俘集中營呆了三年。

2. N-COUNT A prison camp is a prison where the prisoners are not considered dangerous and are allowed to work outside the prison. (囚禁非重犯竝允許其外出勞役的)拘禁營地[美國英語]