squirrel-cage grid

例句：

1. 1. The squirrel-cage grid is a popular choice for bird feeders.
   松鼠笼栅是鸟食器的一个流行选择。
2. 2. The squirrel-cage grid was designed to keep the squirrels away from the food.
   松鼠笼栅的设计是为了把松鼠挡在食物之外。
3. 3.The squirrel-cage grid has become a symbol of community protection efforts.
   松鼠笼栅已经成为社区保护工作的象征。