lay hands on/upon
1．get hold of；seize；get possession of； find得到；找到
If the police can lay hands on him，they will put him in jail．警察若能抓住他，一定会让他入狱的。
I have the book somewhere but I cannot lay hands on it just now．我把那本书放在一个地方，但现在找不到了。
2．do violence to； harm； hurt伤害；加害
He laid violent hands upon himself．他自杀了。
They were afraid that if they left him alone in his disturbed condition he would lay hands on himself． 他心情不好，他们担心假如离开他，他会做出伤害自己的事情。