give yourself / sb up to allow yourself or someone else to be caught by the police or enemy soldiers自首，投案，投降:•The siege ended peacefully after the gunman gave himself up.持枪歹徒缴械投降，围困和平结束。[+ to]•In the end, his family gave him up to the police.最后，他的家人叫他向警方投案自首。 |