stake a claim idiom
宣布所有权，提出拥有权
If you stake a claim to something, you say or show that you have a right to it and that it should belong to you.
He marked the spot on his map where he had seen the gold and returned later that month to stake his claim. 他在地图上标出了见到金子的地方，然后在当月晚些时候回来宣布对此地拥有所有权。