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1·Beef production has fallen nearly fourfold.

牛肉的生产也降了近四倍。

2·The output of grain increased fourfold.

粮食产量增加了三倍。

3·The population in this area has increased fourfold.

该地区的人口已增加到四倍。

4·The method of statistics was exact probabilities in fourfold table.

统计学方法应用四格表确切概率法。

5·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，较1997年增加了四倍。

6·This paper provides a method to test the consistency of the paired fourfold table.

给出了一种对配对四格表进行一致性检验的检验方法。

7·THE amount of plastic thrown away by Americans increased fourfold between 1980 and 2008.

从1980年到2008年，美国人丢弃的塑料的量翻了四番。

8·Exogenous crosslinking of intact discs has shown a fourfold increase in joint stability.

已有显示完整的椎间盘的外源交联在关节稳定性方面增加了四倍。

9·Rwanda's population would rise fourfold, to 42m, giving it a density five times that of Japan.

卢旺达的人口将增加四倍，达到4200万，这将使它的人口密度达到日本的五倍。

10·One example is the fourfold increase in alcohol-related deaths that occurred between 1991 and 2002.

其中一个例子就是，1991至2002年间，与酒精相关的死亡增长了三倍。

四倍

1·But doubling the diameter of the telescope's mirror, without changing its design, would increase its weight fourfold.

但是当望远镜镜片直径翻一番时，如果设计不变，其重量会增加四倍。

2·Beef production has fallen nearly fourfold.

牛肉的生产也降了近四倍。

3·Unirule noted that the profits of state-owned industrial companies had increased nearly fourfold between 2001 and 2009.

天则注意到，2001年至2009年期间，国有工业企业的利润增长了近四倍。

4·We have evaluated this clustering for several sample queries that restrict their search to a single group_PDB value (i.e., HETATOM) and found that it can improve query performance fourfold.

我们已经通过几个将搜索限制于单个group _ PD b值(即hetatom)的样例查询评估了这种集群并发现它能够将查询性能提高四倍。

5·At that time, the city's total area increased fourfold through absorbing several outlying towns and villages.

在那个时候，城市的总面积增加了四倍，通过吸收一些边远城镇和村庄。