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  1. billion

    • IPA[ˈbɪljən]

    英式

    • 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 nearly 5 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 pounds or dollars the problem persists despite the billions spent on it
    • a million million (1,000,000,000,000 or 1012).