四倍

• fourfold
• quadrupling
• quatuor
• urfold
• quadrupole
• quadruple
• quadruplicity

例句

1. 他们的利润十年中增长至四倍[他们使利润在十年中增长至四倍]。
   Their profits have quadrupled/They have quadrupled their profits in ten years.
2. 该地区的人口已增加到四倍。
   The population in this area has increased fourfold.