cement hardener

例句：

1. 1. Thecement hardener is essential for the constructionof buildings.
   水泥硬化剂对于建筑的建设至关重要。
2. 2.The cement hardener helps to improve thedurability and strength of the concrete.
   水泥硬化剂有助于提高混凝土的耐用性和强度。
3. 3. Thecement hardener is used in various applications, including road construction and bridge building.
   水泥硬化剂在各种应用中都有使用，包括道路建设和应用桥梁建造。