墙槽

例句：

1. 1. The wall was so old that the bricks were starting to crumble in the wall sluice.
   这堵墙太旧了，砖块开始在墙上槽里崩溃。
2. 2. The carpenter carefully fitted the wooden planks into the wall sluice.
   木匠小心翼翼地将木板放入墙上槽中。
3. 3. The builders had to remove the wall sluice and replace it with a new one.
   建筑工人不得不拆除墙上槽并换上新的。