louver vane

例句：

1. 1.The louver vane on thewindow is designed to control the amount oflight entering the room.
   窗户上的百叶窗叶片设计用来控制进入房间的光线量。
2. 2. The louver vane onthe roof is used to regulate the temperatureinside the house.
   屋顶上的百叶窗叶片用来调节室内的温度。
3. 3. Thelouver vane onthe door is used to createa draft for ventilation.
   门上的百叶窗叶片用来创造通风的气流。