By the nineteen forties, the expression had spread beyond military leaders. It also included civilian officials. A newspaper in the American city of Philadelphia used the term in nineteen forty-nine. It called the most important police officials, top brass._________________________到1940年,这个表达在军队将领之外流传开来,也流传到政府官员中. 1949年,美国费城的一份报纸上首次使用这个词.它称呼最重要的警官为"顶级黄铜".______________________
