The plural form is billion after a number, or after a word or expression referring to a number, such as ‘several’ or ‘a few’. 用在数字或 several,a few 等表示数字的词语之后时,其复数形式为 billion。
1 NUM 十亿 A
billion is a thousand million.
十亿 2 QUANT-PLURAL 大量;无数 If you talk about
billions of people or things, you mean that there is a very large number of them but you do not know or do not want to say exactly how many.
大量;无数 You can also use
billions as a pronoun.
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