The engine was shielded and steel fasteners were replaced by brass or nylon.发动机被保护起来，钢制的扣件换成了铜制的或尼龙的。If you really get into omelettes, you should splurge and procure a good copper omelette pan.你如果真的对炒蛋感兴趣，那么就该舍得花钱买一个优质的铜制炒蛋用平锅。He read the brass name plate by the door.他看了一下门旁铜制的姓名牌。