亿

• 拼音: yì
• 汉字拆解: 亿 = 亻 (person radical) + 乙 (phonetic), simplified from 億

含义

Hundred million. The number 100,000,000, a basic large counting unit in Chinese.

Chinese counting groups numbers in units of 万 (ten thousand) and 亿 (hundred million), which differs from Western grouping by thousands. One 亿 equals one hundred million. Frequently used when discussing population, money, and large-scale data.

例句

1. 中国有十四亿人口。
2. 这家公司赚了好几亿。
3. 地球上有七十多亿人。

用法指南

语境: everyday, news, data

语气: informational

正确说法

• 中国有十四亿人。(China has 1.4 billion people.)
• 这个项目花了两亿。(This project cost two hundred million.)

错误说法

• 我有一亿个朋友。(Don't use 亿 for casual exaggeration in formal contexts — it literally means a hundred million.)

起源与历史

Ancient character originally meaning 'to be content.' The meaning shifted to the large number 100,000,000 over time. Simplified from 億.

文化背景

世代: All ages

社会背景: Universal