Definition
四十亿是数字4,000,000,000的中文表达，其中“亿”是中文的数字单位，相当于英文的“hundred million”。作为量词，它直接修饰名词，表示数量，常用于人口、金额、产量等大数目统计。注意“四十亿”本身已包含单位，后面不需要再加其他量词。
measure word
four billion (used for large quantities)
Examples
- 四十亿。Zhège xiàngmù xūyào sì shí yì měiyuán tóuzī.This project requires four billion dollars in investment.
- 四十亿。Qùnián quánqiú liángshi chǎnliàng chāoguò sì shí yì dūn.Last year global grain output exceeded four billion tons.
- 四十亿。Gāi gōngsī shìzhí dádào sì shí yì rénmínbì.The company's market value reached four billion RMB.
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