detention

柯林斯词典

1. N-UNCOUNT Detention is when someone is arrested or put into prison. 拘留; 监禁[also N in pl]
...the detention without trial of government critics. …对政府批评者未经审判而进行的关押。
2. N-VAR Detention is a punishment for students who misbehave, who are made to stay at school after the other students have gone home. (为惩罚学生的) 课后留校
The teacher kept the boys in detention after school. 老师在放学后罚男孩们留了下来。