劳改犯 
offender under labour reform
- “是谁建了白海运河(草菅人命的斯大林下令劳改犯修建的一项工事)?”
“Who built the White Sea canal [Stalin's single most murderous slave-labour project]?” - 一个正在服刑的劳改犯在去修路时拣到1000元,并毫不犹豫的把它交给了狱警(以求减刑)。
The gaolbird feels tired of earthly life that no one on earth believes him any longer.