billions

n.

the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seen

同义词：one million million1000000000000

a very large indefinite number (usually hyperbole)

同义词：milliontrillionzillionjillion

the number that is represented as a one followed by 9 zeros

同义词：one thousand million1000000000

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