fivefold

例句：

1. 1. The company's profits have increased by fivefold since the new policy was implemented.
   自从实施了新政策后，该公司的利润增加了五倍。
2. 2.The research team found that the experiment had a fivefold increase in efficiency.
   研究小组发现实验的效率提高了五倍。
3. 3. The scientist discovered that the amount of radiation could be multiplied by fivefold.
   科学家发现辐射量可以乘以五倍。