n (1)金属(hard substances，such as iron，copper，lead，etc)[C，U]：Tin，copper，gold and silver are all～s.锡、铜、金、银都是金属。precious/rare/ferrous/heavy～s 贵/稀有/黑色/重金属;Platinum is not a base～，but iron is.白金不是贱金属，但铁是。Put a piece of～over the hole.在洞口上覆盖一块金属。a～spoon/door/container金属匙/金属门/金属容器;

(2)铁路，钢轨(railway lines)[pl]：A night train/One coach roared along the～s.一列夜班车/一列客车沿铁轨轰鸣前行。

(3)铺路用碎石(broken stone for covering a road，road metal);

vt 用碎石筑(修)路(make or repair road with broken stone)[T+n尤 pass](旧用法)：a bright～led road 一条明净的碎石路;

→me′tallic adj 金属的;′metalwork n 金属工艺制品