airduct

例句：

1. 1.The engineer designed the air duct to direct the airflow efficiently.
   工程师设计了空气导管，以有效地引导空气流动。
2. 2.The ventilation system in this room is equipped with a special air duct for efficient air circulation.
   这个房间的通风系统配备了一个特殊的空气导管，用于高效的空气流通。
3. 3. The construction of the new building required the installation of several air ducts for better air quality.
   新建筑的建设需要安装几根空气导管，以改善空气质量。