( bn) 1 000 000 000; one thousand million10 亿HELPBillion and billions are always used with a plural verb, except when an mount of money is mentioned. You say a, one, two, several, etc. billion without a final ‘s’ on ‘billion’. Billions (of …) can be used if there is no number or quantity before itbillion 和 billions 均用复数动词（与金额连用时除外）。说 a （one , two , several 等） billion ，billion 后不加 s。如果前面没有数目或数量，可用 billions (of … )：◆Worldwide sales reached $2.5 billion.全球销售额达到 25 亿元。◆half a billion dollars五亿元◆tens of billions of yen数百亿日元◆They have spent billions on the problem (= billions of dollars, etc.).他们花费了几十亿元解决这个问题。