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billion

number
 
🔊/ˈbɪljən/
🔊/ˈbɪljən/
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  1.  
    (abbreviation bn)
    1 000 000 000; one thousand million十亿
    • Worldwide sales reached 2.5 billion.全球销售额达到了 25 亿。🔊🔊
    • half a billion dollars五亿美元
    • They have spent billions on the problem (= billions of dollars, etc.).他们花了几十亿解决这个问题。🔊🔊
    You say a, one, two, several, etc. billion without a final ‘s’ on ‘billion’. Billions (of…) can be used if there is no number or quantity before it. Always use a plural verb with billion or billions, except when an amount of money is mentioned Two billion (people) worldwide are expected to watch the game. • Two billion (dollars) was withdrawn from the account. There are more examples of how to use numbers at the entry for hundred.Topics Maths and measurementa2, Moneya2
  2.  
    a billion, billions (of…)
    (informal) a very large amount数以十亿计；大量
    • Our immune systems are killing billions of germs right now.我们的免疫系统正在杀死数以十亿计的细菌。🔊🔊
  3. (British English, old-fashioned) 1 000 000 000 000; one million million一万亿 synonym trillion
    4. Word Originlate 17th cent.: from French, from million, by substitution of the prefix bi- ‘two’ for the initial letters.