copper

英 [ˈkɒpə(r)]

美 [ˈkɑːpər]

n. 铜; 铜币; 警察

复数：coppers　现在分词：coppering　过去式：coppered　第三人称单数：coppers　过去分词：coppered　

Collins.2 / BNC.3656 / COCA.5053

牛津词典

noun

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
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。
警察
a police officer

N-UNCOUNT 铜
Copperis 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
ADJ 铜色的;紫铜色的;红棕色的
Copperis 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。
铜板;铜币
Coppersare brown metal coins of low value.
N-COUNT 警察
Acopperis a policeman or a policewoman.
1. ...your friendly neighbourhood copper.
  你们友善的社区警察

noun

any of various small butterflies of the family Lycaenidae having coppery wings
a reddish-brown color resembling the color of polished copper
Synonym:copper color
uncomplimentary terms for a policeman
Synonym:bullcopfuzzpig
a copper penny
a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element
Synonym:Cuatomic number 29

verb

Iron casts better than copper.
铁比铜容易铸型。
A copper salver, plated with silver.
镀了银的铜托盘。
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。
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。
Copper is a good conductor of heat.
铜是热的良导体。
Which is the most conductive: iron, copper or silver?
铁、铜和银，哪种传导性最好？
Copper nails are better than iron nails because the iron rusts
铜钉比铁钉好，因为铁会生锈。
Copper turns green as it weathers.
铜暴露在自然环境中就变绿。
Plastic and rubber won't conduct electricity, but copper will.
塑料和橡胶不导电，但铜可以。
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。