numeral [基数词]十亿；<旧>万亿
The new runway is a billion-dollar boondoggle.
noun [抽象名词]十亿；亿万，大量（billions）
Worldwide sales reached 2.5 billion.
- billion 出现在下面的课文中
- Lesson 61 Trouble with the Hubble billion 名词: 10 亿
- Lesson 55 From the earth:Greetings
单词造句:
The new runway is a billion-dollar boondoggle.
Worldwide sales reached 2.5 billion.