关押的英语怎么说

关押的英文说法是"imprisonment"，来源于英文"imprison"，意思是监禁、囚禁。
例句：
He was sentenced to five years' imprisonment for robbery. 他因抢劫罪被判处五年监禁。
The prisoner is serving a life imprisonment for murder. 这名囚犯因谋杀罪被判处终身监禁。
Imprisonment is a severe punishment that can have lasting effects on an individual. 监禁是一种严厉的惩罚，可能对个人造成持久的影响。