| 释义 |
met.alH5met7[l, $5met-na chemical element, such as iron or gold, or a mixture of such elements, such as steel, which electricity and heat can travel through and which is generally hard and strong金属Metals are used for making machinery and tools. [C]金属被用于制造机器和工具。Metal, paper and glass can be recycled. [U]金属、纸张和玻璃可以再生。Steel is a ferrous metal (= It contains iron) and some types of it rust when exposed to air. [C]钢是一种铁属金属，有几种钢暴露在空气中会生锈。Iron, copper, tin and lead are all heavy (= dense) metals and are commonly used in engineering. [C]铁、铜、锡和铅都是重金属，通常用于工程机械中。Molten metal (= Metal in a liquid state) is shaped by pouring it into a mould of the required shape and leaving it to cool. [U]熔化的金属成形要通过把它注入需要形状的模具再冷却。Silver, gold and platinum are precious metals. [C]银、金和铂是贵重金属。The wooden beam is reinforced with a metal plate.木梁由金属板加固。A metal detector is a machine that you move over the ground or an object to discover if there is metal there.金属探测仪Many people use metal detectors in fields and on beaches in the hope of finding buried treasure.许多人在地里和沙滩上使用金属探测仪，希望找到埋藏的宝藏。Metal detectors are used in airports to check that people are not carrying weapons.金属探测仪被用于机场以核查人们没有携带武器。Metal fatigue is a weakness which develops in metal structures which are used repeatedly.金属疲劳Metal fatigue was blamed for the plane crash, which was caused by one of the engines disintegrating.金属疲劳对这次由其中一个引擎分裂造成的飞机失事负有责任。
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