directional baffle

例句：

1. 1. The new car has a directional baffle that helps to keep the engine cool.
   这款新车有一个定向挡板，有助于保持发动机冷却。
2. 2.The engineer used a directional baffle to redirect the airflow around the exhaust pipe.
   工程师使用定向挡板来重新引导排气管周围的空气流动。
3. 3. The directional baffle was designed to prevent the engine from overheating during high-speed driving.
   定向挡板的设计旨在防止在高速行驶时引擎过热。