internal exhaust gas recirculation

例句：

1. 1. The new carhas a feature that allows for internal exhaust gas recirculation, which helps to reduce emissions.
   这款新车有一个特性，允许进行内部废气再循环，有助于减少排放。
2. 2. In the automotive industry, internal exhaust gas recirculation is a common practice to improve fuel efficiency.
   在汽车行业中，内部废气再循环是一种常见的做法，以提高燃油效率。
3. 3. The engineer explained how the internal exhaust gas recirculation system works, showing the importance of this technology in reducing pollution.
   这位工程师解释了内部废气再循环系统是如何工作的，展示了这项技术在减少污染中的重要性。