1. 漫游,做尝试性的探讨、漫谈：179. shoot oneself in the foot 搬起石头砸自己的脚 | 180. knock around 漫游,做尝试性的探讨、漫谈 | 181. knock off 收工下班,轻而易举地完成
2. 漫游,出现：335. keep up with 跟上... | 336. knock around 漫游,出现 | 337. knock down 碰倒
3. 虐待：Screw up振作,鼓舞 | Knock around虐待 | That's just bananas.那真闹心啊
1. There's a knock on the door around midnight and I hear a man saying something in Chinese.
2. One soldier shouted that if anyone was around, the person should knock on the wall.