别再沉迷于那些不切实际的想法了，你只是在徒劳地追逐幻影。

Stop ___ghost-chasing those unrealistic ideas; you're just pursuing illusions in vain.

他们周末在一栋闹鬼的老宅子里玩捉鬼游戏。

They spent the weekend ___ghost-chasing in an old haunted house.