uniform hardening

例句：

1. 1. The soldiers wore the same uniforms for the entire battle.
   士兵们在整个战斗中穿着相同的制服。
2. 2. The company had a strict policy on uniforms and dress code.
   该公司对制服和着装规定有严格的政策。
3. 3. The uniforms were made from high-quality materials to ensure comfort and durability.
   这些制服是用高质量的材料制成的，以确保舒适性和耐用性。