vt.

1. 乘，使相乘[（+by/together）]
   Four multiplied by five is twenty.

   五乘四得二十。

2. 使（成倍地）增加
   Such examples could be multiplied indefinitely.

   这样的例子不胜枚举。

3. 使繁殖
   Hot weather multiplied the bacteria in the food rapidly.

   炎热的天气使食品中的细菌迅速繁殖。

vi.

1. 增加
   As we climbed up the mountain, the dangers and difficulties multiplied.

   我们越向山顶攀爬，危险和困难越是倍增。

2. 繁殖
   Rabbits multiply quickly.

   兔子繁殖很快。

3. 做乘法
   He learned to multiply at the age of five.

   他五岁学会做乘法。

a.

1. 多层的，多股的

ad.

1. 多样地；多重地

v.

1. obtain from (a number) another which contains the first number a specified number of times.
2. increase in number or quantity.
3. increase in number by reproducing.
4. propagate (plants).

adv.