1. | 十亿1 000 000 000; one thousand million |
Worldwide sales reached 2.5 billion. 全球销售额达到了 25 亿。 | |
half a billion dollars 五亿元 | |
They have spent billions on the problem(= billions of dollars, etc.) . 他们花了几十亿元解决这个问题。 |
2. | (informal) 数以十亿计;大量a very large amount |
Our immune systems are killing billions of germs right now. 我们的免疫系统正在杀死数以十亿计的细菌。 |
3. | 一万亿1 000 000 000 000; one million million |