shaking grate

例句：

1. 1. The old house had ashaky grate that rattledevery time the wind blew.
   这所老房子有一个摇摇晃晃的格栅，每次风一吹就响个不停。
2. 2. Theold grate was so worn out thatit could barely hold the weight of thedoor.
   这个旧格栅磨损得很厉害，几乎承受不住门的重量。
3. 3. Theengineer inspected the grate and found that it neededto be replaced immediately.
   工程师检查了格栅，发现它需要立即更换。