broken hardening

例句：

1. 1. The broken pieces of the statue were carefully placed back together.
   雕塑的碎片被小心地重新放在一起。
2. 2. The hardening process is crucial for the final product's quality.
   硬化过程对于最终产品的质量至关重要。
3. 3. The broken window was fixed by a skilled craftsman.
   一个熟练的工匠修好了这个破碎的窗户。