游乐场里，孩子们正开心地玩着打地鼠游戏。

At the amusement park, children are happily playing ___whack-a-mole.

管理社交媒体上的虚假账号就像打地鼠游戏——刚封禁一个，马上又冒出新的。

Managing fake accounts on social media is like playing ___whack-a-mole – you ban one, and another appears instantly.