special brass

例句：

1. 1.The car's engine is made of special brass.
   这辆车的引擎是用特殊黄铜做的。
2. 2. The antique urn is made from special brass.
   这个古董花瓶是用特殊黄铜制成的。
3. 3. The brass doorknob was a unique feature of the old mansion.
   这个黄铜门把手是老宅的一个独特特征。