；金属Metal is a hard substance such as iron, steel, gold, or lead.
...pieces of furniture in wood, metal and glass...
用木料、金属和玻璃制成的一件件家具
He hit his head against a metal bar.
他的头撞在一根金属棒上。
Oxford
metal★/ˈmetl; NAmEˈmetl/noun[countable , uncountable ]a type of solid mineral substance that is usually hard and shiny and that heat and electricity can travel through, for example tin, iron and gold 金属◆a piece of metal一块金属◆a metal pipe/bar/box金属管╱棍╱盒子◆The frame is made of metal.框子是用金属做的。☞see also
a hard, usually shiny substance such as iron, gold, or steel → metallic: The gate is made of metal. a small black metal box They traded in gold and other precious metals (=valuable metals used especially for making jewellery). The old trucks were sold as scrap metal (=old metal that is melted and used again). →
heavy metal
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