knock out：敲出；击倒；打破；打落；打昏。knock one's pipe out：敲出烟斗里的烟灰。
put in：插入；提交；任命；实行；花费（时间）；种植；进入；申请；投入，投资。

【例句】
I heard him knock out his pipe on the mantelpiece.
我听到他在壁炉上敲出烟灰的声音。

He put the key in the lock and turned it.
他把钥匙插入锁里转动。