physical confinement or confinement through threats: victims are unable to leave or seek help, which might include withholding travel or immigration documentation
caethiwed corfforol neu gaethiwed drwy fygythiadau: nid yw dioddefwyr yn gallu gadael na cheisio cymorth, a gallai hyn gynnwys mynd â'u dogfennau teithio neu fewnfudo oddi wrthynt