1. Brass is an alloy of copper and zinc.
    黄铜是铜和锌的合金.

2. He is a member of the brass band.
    他是铜管乐队的一员。

3. Soapy stood still with his hands in his pockets, and smiled at the sight of brass buttons.
    苏比双手插在兜里，站在那儿，一动也没动，望着警察上衣上的铜钮扣发笑。

4. She shyly extended both hands toward him, the brass fingernails shining in the overhead light.
    她害羞地将两只手伸向他，黄铜指甲在头顶射下的灯光下闪闪发光。