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  1. Oxford American Dictionary

    billion

    • IPA[ˈbilyən]

    美式

    • card
      the number equivalent to the product of a thousand and a million; 1,000,000,000 or 109；a very large number or amount of something

    • noun: billion, plural noun: billions

    • 釋義

    card

    • 1. the number equivalent to the product of a thousand and a million; 1,000,000,000 or 109 a world population of over 6 billion half a billion dollars
    • ▪ a very large number or amount of something our immune systems are killing billions of germs right now
    • ▪ a billion dollars (or pounds, etc.) the problem persists despite the billions spent on it
    • ▪ a million million (1,000,000,000,000 or 1012).