v.乘；繁殖；增加（multiplying的过去式）
Four multiplied by seven is twenty-eight. 7乘4等于28。
Such examples could be multiplied indefinitely. 这样的例子不胜枚举。
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。
George's chances of success multiplied. 乔治成功的机会增多了。
Our problems have multiplied since last year. 自去年以来我们的问题增多了.
