billion
英 ['bɪljən]
美['bɪljən]
	    - n. 十亿;大量
 - num. 十亿
 - adj. 十亿的
 - n. (Billion)人名;(法)比利翁
 
英英释意
- 1. the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seen
 
- 2. the number that is represented as a one followed by 9 zeros