vent manifold

例句：

1. 1. The engineer designed a vent manifold to improve airflow in the factory.
   工程师设计了一个通风歧管来改善工厂的气流。
2. 2. The vent manifold was used to direct exhaust gases away from the building.
   通风歧管被用来将废气导向建筑物外。
3. 3.The vent manifold is crucial for maintaining proper air pressure in the room.
   通风歧管对于保持房间内适当的空气压力至关重要。