n.金或银；金银合金；含铜较高的银
America has only 0.3 billon people. 美国有0.
The ground was worth 2.5 billon yen in terms of the local land-value. 根据当地的地价来算,仅这块地就值25亿日元。
Bob has a billon dollars while Kate has a million,so Kate is__than Bob. 当然选择A了。因为less...than 是少于...的意思。
The scope of our projects, range in capital investments from 2 million USD to 9.5 Billon USD. 的范围，我们的项目，范围，在资本投资从2万美元到9.
The Federal Reserve agreed to let the insurance giant borrow nearly 38 billon dollars. 美联储同意借给这个保险大亨380亿美元。
