The mineral's price increased fourfold in 2008, peaking at more than $ 800 a tonne.
2008年,钾肥价格上涨了3倍, 达到每吨逾800美元的历史最高水平.
期刊摘选
That has risen fourfold, to around 800.
这种情况现在已经增加到4倍, 大约有800个职位属于这种情况.
期刊摘选
Electric hand is basic be electric head ache is fourfold.
电手基本是电头疼痛的四倍.
期刊摘选
The supply of fist grew fourfold there.
那里鱼的供应量增加了三倍.
期刊摘选
In some cases output has increased more than fourfold.
在有些情况下,产量增加了3倍多.
期刊摘选
For a diagnosis of tularemia you need a fourfold increase in serum antibody levels.
要诊断是兔热症,她的血清抗体等级需要有4个部分的增长.
电影对白
The price of gasoline has increased fourfold over the past two years.
在过去的两年时间里,汽油价格已经上涨了四倍.
期刊摘选
He acted illegitimately when he increased the rent fourfold.
他非法地把租金增加到原来的四倍.
期刊摘选
By the late eighties their number had grown fourfold.
到80年代末的时候，他们的数量已是原来的4倍。
柯林斯例句
The growth in public money for academic research has speeded the process: federal research grants rose fourfold between 1960 and 1990, but faculty teaching hours fell by half as research took its toll.
出自-2011年考研阅读原文"a fourfold increase in the dosage"
"quadruple rhythm has four beats per measure"
"quadruplex wire"
"the price of gasoline has increased fourfold over the past two years"