如何使用 "fourfold" 造句

1. Five years later , travel spending had increased fourfold .
然而五年以后,差旅费用增长了四倍。
2. Beef production has fallen nearly fourfold .
牛肉的生产也降了近四倍。
3. Lynas shares have risen fourfold since china announced the quota cuts in july 2010 .
lynas的股价自2010年7月中国宣布削减配额以来涨了四倍。
4. Oil now accounts for 12 % of brazil 's gdp , a fourfold increase since 1997 .
目前石油占巴西gdp百分之十二,1997年增加了四倍。
5. Hedge funds now manage $ 2.2 trillion in assets , up fourfold since 2000 .
对冲基金现在掌控的资产总量是2.2万亿美元,比2000年总值多了四倍。