用木桩标出 mark (an area) with stakes
stake sth ⇔ out〔off〕
He's staked out this part of the house as his own.
他已把屋子的这一部分留作己用。
They are staking out the ground for a new football pitch.
他们正在用桩标出新足球场场地。
They've set aside a small area as a children's playground, and staked it off.
他们划出一小块地皮用于建造儿童游乐场,并在周围打上了木桩。