possum

n. [口]负鼠
vi. 装病

He began to suspect that his mother sometimes looked through his pockets while he was asleep, so for several nights he played possum when he heard her coming up the stairs and waited to see what would happen.

他开始怀疑自己睡着时母亲有时翻他的口袋，于是有好几个晚上他一听到母亲上楼的脚步声就假装睡着了，等着瞧瞧会发生什么事。

The rabbit played possum under the bushes, hoping the hunter would not see him.

兔子呆在灌木丛中一动也不动，希望猎人看不见它。