a. 四重的, 四倍的, 四垒的
adv. 四倍, 四重
r. by a factor of four
1. For a diagnosis of tularemia you need a fourfold increase in serum antibody levels.
如果血清抗体滴度增加了四倍 则可确诊兔热病
2. I'm proposing a fourfold increase in capital expenditure based on biological and hardware advances.
基于生物和硬件的发展 我提议将资本支出提升四倍
3. And over four million tonnes of tuna are caught worldwide each year, a fourfold increase in as many decades.
每年全球金枪鱼渔获量超过四百万吨 这一数字在几十年内增长了四倍
以上参考资料就是本英汉词典详细汇总的单词fourfold的翻译英语含义，如有错漏请向我们提供反馈意见。