waterproofing agent

例句：

1. 1. The construction company uses this waterproofing agent to ensure the waterproofing of the building.
   这家建筑公司使用这种防水剂来确保建筑物的防水。
2. 2. The waterproofing agent is a crucial component in preventing water damage during construction.
   防水剂是防止施工过程中水损害的关键组成部分。
3. 3. The waterproofing agent is applied on the surface of the concrete to prevent it from being wetted byrain or other liquids.
   防水剂被涂抹在混凝土的表面以防止它被雨水或其他液体湿润。