An air mortar (or debris mortarhttp://books.google.

1. Air mortar is often used for repairing historic buildings due to its compatibility with the original construction materials.
   氣硬性砂漿常用于修復歷史建筑，因為它與原建筑材料相兼容。
2. The mason prepared several batches of air mortar to ensure enough material for the day's work.
   泥瓦匠準備了幾批氣硬性砂漿，以確保當天的工作材料充足。
3. Unlike hydraulic mortars, air mortars cannot set under water.
   與水硬性砂漿不同，氣硬性砂漿不能在水下凝固。