sclerote

例句：

1. 1. The cement was treated with a sclerote to improve its strength.
   水泥被处理过，以增强其强度。
2. 2.The sclerote in the paint is designed to protect the surface from scratches.
   油漆中的硬化剂旨在保护表面免受刮擦。
3. 3. The engineer used a sclerote to harden the metal before it was welded together.
   工程师使用硬化剂使金属在焊接之前变硬。