circular exhaust box

例句：

1. 1.The circular exhaust box is designed to improve the efficiency of the engine.
   圆筒形排气箱的设计旨在提高发动机的效率。
2. 2. The engineer carefully inspected the circular exhaust box before installing it.
   工程师在安装之前仔细检查了圆筒形排气箱。
3. 3. The circular exhaust box was a crucial part of the car's exhaust system.
   圆筒形排气箱是汽车排气系统的关键部分。