billion /ˈbɪljən/ star5 CET4 TEM4 (billions)

• 1.  

  NUM（数词） A billion is a thousand million. 10亿

  例：

  The Ethiopian foreign debt stands at 3 billion dollars.

  埃塞俄比亚的外债达30亿美元。

• 2.  

  QUANT-PLURAL（复数型数量词） If you talk about billions of people or things, you mean that there is a very large number of them but you do not know or do not want to say exactly how many. 亿万 [QUANT 'of' pl-n]

  例：

  Biological systems have been doing this for billions of years.

  生物系统亿万年来都在这样做。

• 3.  

  PRON（代词） You can also use billions as a pronoun. 亿万

  例：

  He thought that it must be worth billions.

  他认为它一定值亿万元。

• 4.  

  （） → see also trillion