New Words：

prison [ˈprɪzn] n. 监狱;牢狱;看守所

cell [sel] n. 牢房,囚室
prison cell n. 牢房,囚室

prisoner [ˈprɪznər] 囚犯;犯人

Sample Sentences：

He was sent to prison for five years.
I heard Tom was in the prison. Don't you worry about him?

I need you to watch the prisoner tonight.

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