The teacher often detains the lazy pupils at school to do their homework.老师常把懒惰的学生留在学校写作业.The crowned head , the person in power either people's detention or the control, or detains legally.君主 、 当权者或人民的扣留或管制, 或依法扣押....

detains的音标：...

v.留住( detain的第三人称单数 )，耽搁，拘留，扣留...