copper

• 指一种红棕色的金属元素，也指用这种金属制成的物品，如硬币或锅。

A noun referring to a reddish-brown metallic element, or an object made from this metal, such as a coin or a cooking pot.

1. Chemical elementB1formalscientific

   A reddish-brown metallic element (Cu) that is a good conductor of electricity and heat.

   铜

   • Copper is widely used in electrical wiring.
   • The statue was made of copper and turned green over time.
   • Copper pipes are common in plumbing systems.

2. B1informalbritish

   A coin made of copper or a copper alloy, typically of low value.

   铜币

   • He found a few coppers in his pocket.
   • The vending machine only accepts copper coins.
   • She gave the beggar a handful of coppers.

   同义词centpenny

3. B2slang

   A slang term for a police officer.

   警察

   • The coppers arrived at the scene quickly.
   • He was arrested by the coppers for speeding.
   • Watch out, the coppers are patrolling this area.

   同义词bobbybullconstablecopfuzzheatlawmanpatrolmanpig

• 用铜覆盖或镀铜；非正式（俚语）中指警察巡逻或逮捕某人。

A verb meaning to coat or plate with copper, or in informal contexts, to police or arrest someone (slang).

1. To cover with copperC1formal

   To coat or plate an object with a layer of copper.

   镀铜

   • The ship's hull was coppered to prevent barnacles.
   • They coppered the bottom of the boat for protection.
   • The artisan coppered the decorative bowl.

   同义词coatcopperplatefaceplatesheathe