grating sensor

例句：

1. 1. The carpenter used a grating to create the window frame.
   木匠用格栅制作窗户框架。
2. 2. The old house had a wooden grating on its roof.
   这所旧房子的屋顶上有木格栅。
3. 3.The grating was designed to prevent animals from climbing into the building.
   格栅的设计是为了防止动物爬进建筑物。