copper

Compared meaning: a police officer (noun).

比较义项：警察（名词）。

• cop

  The most common, neutral informal word for a police officer, used freely in both British and American English, in everyday speech and news.

  最常见、语气中性的非正式说法，指警察，在英式和美式英语中都广泛使用，常见于日常口语和新闻报道。

  She called the cop over when she saw the broken window.

  她看到窗户被打破时，叫来了警察查看。

• copper 本词

  A British informal, slightly dated word for a police officer, more colloquial than cop and mainly heard in the UK, often in older or working-class speech.

  英式非正式说法，指警察，语气略显过时，比cop更口语化，主要用于英国英语中，常见于较年长或平民化的口语表达。

  A friendly local copper stopped by to check on the shop.

  一位友善的当地警察顺道过来查看了这家店铺。

Cop and copper are both informal words for a police officer. Cop is more common and neutral, used in British and American English. Copper is a British informal word, older-sounding and less common. Copper can also mean the metal; that meaning is not compared here.

cop和copper在这个意思上都是非正式说法，指“警察”，但语气和使用地区不同；这里不比较copper作为金属“铜”的意思。