重点讲解：
1. in the middle of 中部；中央；中间；
例句：Howard stood in the middle of the room sipping a cup of coffee.
霍华德站在房间中央，小口抿着一杯咖啡##5wwq1yyJjvO=。
2. hang out 闲逛，逗留；
例句：I often used to hang out in supermarkets.
我过去经常在超市里逛个没完Ck.[.|#&!^~RO6^6(O。
3. close off 隔绝；封锁；
例句：The workmen closed off the street for repairs.
工人们将大街封锁进行翻修l2AlA(%UkzP。
4. each other 彼此；互相；
例句：They took out their resentments on each other.
他们互相发泄怨气_[2@[,LWZx。
5. be interested in 感兴趣的；有兴趣的；关心的；
例句：He is not interested in second hand information.
他对间接的消息不感兴趣x3Hj8w*hR)S_qHX。