倍[bèi]

名times; -fold

♦ 四~ four times; fourfold

♦ 二的五~是十。 Five times two is ten.

♦ 十是五的两~。 Ten is twice as much as five.

♦ 大一~ twice as big; twice the size

形double; twice as much

♦ 勇气~增 with redoubled courage