copper

noun

1. 铜
   a chemical element. Copper is a soft reddish-brown metal used for making electric wires, pipes and coins
   1. a copper mine
      铜矿
   2. copper pipes
      铜管
   3. copper-coloured hair
      红棕色的头发
2. 铜币
   brown coins that do not have much value
   1. I only paid a few coppers for it.
      我只花了几个铜板买下这东西。
3. 警察
   a police officer

1. N-UNCOUNT 铜
   Copper is reddish brown metal that is used to make things such as coins and electrical wires.
   1. Chile is the world's largest producer of copper.
      智利是世界上最大的产铜国。
   2. ...a copper mine.
      铜矿
2. ADJ 铜色的;紫铜色的;红棕色的
   Copper is sometimes used to describe things that are reddish-brown in colour.
   1. His hair has reverted back to its original copper hue.
      他的头发又变回原来的淡红棕色。
3. 铜板;铜币
   Coppers are brown metal coins of low value.
4. N-COUNT 警察
   A copper is a policeman or a policewoman.
   1. ...your friendly neighbourhood copper.
      你们友善的社区警察

1. Bronze is an alloy of copper and tin
   青铜是铜和锡的合金。
2. Miners in Zambia's northern copper belt have gone on strike
   赞比亚北部铜矿带的矿工已经罢工了。
3. Chile is the world's largest producer of copper.
   智利是世界上最大的产铜国。
4. His hair has reverted back to its original copper hue.
   他的头发又变回原来的淡红棕色。
5. We tried to grow some copper sulphate crystals with our children.
   我们想跟孩子们一起制作硫酸铜晶体。
6. Contemporary photographs are juxtaposed with a sixteenth century, copper Portuguese mirror.
   几幅当代照片和一面16世纪的葡萄牙铜镜并排摆在一起。
7. The government pre-empted a threatened strike at the state-owned copper company.
   政府先发制人，制止了国有铜矿公司可能发生的一次罢工。
8. Copper nails are better than iron nails because the iron rusts
   铜钉比铁钉好，因为铁会生锈。
9. As new mines come on stream, Chile's share of world copper output will increase sharply
   新矿投产后，智利在世界铜产量中所占的份额将大幅增加。
10. He makes decorative vessels in copper, stainless steel and silver.
    他用铜、不锈钢和银制造装饰性器皿。
11. Among the mineral deposits of the province, tin occupies first place; copper comes second.
    该省矿藏，以锡最多，铜次之。
12. Iron casts better than copper.
    铁比铜容易铸型。
13. Brass is an alloy of copper and zinc.
    黄铜是铜和锌的合金。
14. Why does copper bend easily?
    铜为什么容易弯曲？
15. Chemical analysis revealed a high content of copper.
    化学分析显示铜的含量很高。
16. Copper is a good conductor of heat.
    铜是热的良导体。
17. The antiseptic properties of copper sulphate have never been questioned.
    硫酸铜具有防腐性，这是不曾有过问题的。
18. Although hit by the flood, they did not ask for a single copper from the state.
    尽管遭了水灾，他们却没有向国家伸手要一分钱。
19. They produced Brass by the fusion of copper and zinc.
    他们通过铜和锌的熔合来制造黄铜。
20. Plastic and rubber won't conduct electricity, but copper will.
    塑料和橡胶不导电，但铜可以。
21. The stainless tubing is less likely to kink than copper, but it is harder to solder without an acid treatment.
    不锈钢管比铜管不易纠结，但不经酸性处理焊接较困难。
22. Copper is metal with high ductility.
    铜是韧性很高的金属。
23. Copper turns green as it weathers.
    铜暴露在自然环境中就变绿。
24. Copper wire is flexible.
    铜丝易弯曲。
25. When nitric acid is poured on copper, a Brown vapour gives off.
    将硝酸倒在铜上，会散发出一种棕色的蒸气。
26. Copper and gold are both metals.
    铜和金都是金属。
27. Copper and zinc are fused to make brass.
    铜与锌熔合成黄铜。黄铜是铜和锌的合金。
28. A copper salver, plated with silver.
    镀了银的铜托盘。
29. Which is the most conductive: iron, copper or silver?
    铁、铜和银，哪种传导性最好？
30. Metals commonly mixed with gold are nickel, platinum, and copper.
    通常与金混合的金属有镍、铂和铜。

noun

1. any of various small butterflies of the family Lycaenidae having coppery wings

2. a reddish-brown color resembling the color of polished copper

   Synonym:    copper color

3. uncomplimentary terms for a policeman

   Synonym:    bullcopfuzzpig

4. a copper penny

5. a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element

   Synonym:    Cuatomic number 29

verb

1. coat with a layer of copper