tā / guǐ / guǐ / shǔ / shǔ / de / duǒ / zài / mén / hòu / bù / zhī / dào / zài / zuò / shén / me

他鬼鬼鼠鼠地躲在门后，不知道在做什么。

He was sneaking around behind the door, and no one knew what he was doing.