The Ethiopian foreign debt stands at 3 billion dollars.
埃塞俄比亚的外债达30亿美元。
PRON. 代词
1.?亿万 , 无数
Billions means a very large number or amount of something.
双语例句
例：
He thought that it must be worth billions.
他认为它一定值亿万元。
QUANT. 数量词
1.?亿万 , 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.
双语例句
例：
Biological systems have been doing this for billions of years.