quadruple /ˈkwɒdrʊpəl, -ˈdruːpəl/ TEM8 ( quadrupling, quadrupled, quadruples )

• 1. 

  V-T/V-I If someone quadruples an amount or if it quadruples, it becomes four times bigger. 使成4倍; 成为4倍

  例：

  China seeks to quadruple its income in twenty years.

  中国力求在20年内将其收入翻两番。

• 2. 

  PREDET If one amount is quadruple another amount, it is four times bigger. 4倍的 [PREDET det n]

  例：

  Fifty-nine percent of its residents have attended graduate school – quadruple the national average.

  该地区59％的居民读过研究生–是全国平均水平的4倍。

• 3. 

  ADJ You use quadruple to indicate that something has four parts or happens four times. 由4部分组成的; 发生4次的 [ADJ n]

  例：

  The quadruple murder has replaced property prices as the sole topic of interest.

  这4起连环谋杀案已经取代房价成为了人们惟一感兴趣的话题。