billion
billion 英 [ˈbɪljən] 美 [ˈbɪljən]
n. 十亿；大量 num. 十亿 adj. 十亿的
名词复数:billions
- A billion is 1,000,000,000. There are over 7 billion people in the world, the last time we checked.
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- n. 十亿；大量
- num. 十亿
- adj. 十亿的
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1. So you actually have one billion dollars?
你真的有十亿美元吗？
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2. half a billion dollars
五亿美元
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3. killing billions of germs
正杀死数以亿计的细菌。
- billion (n.) 1680s, from French billion (originally byllion in Chuquet's unpublished "Le Triparty en la Science des Nombres," 1484; copied by De la Roche, 1520); see bi- "two" + million. A million million in Britain and Germany (numeration by groups of sixes), which was the original sense; subsequently altered in French to "a thousand million" (numeration by groups of threes) and picked up in that form in U.S., "due in part to French influence after the Revolutionary War" [David E. Smith, "History of Mathematics," 1925]. France reverted to the original meaning in 1948. British usage is truer to the etymology, but U.S. sense is said to be increasingly common there in technical writing.
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