If you multiply one number by another, you add the first number to itself as many times as is indicated by the second number. For example 2 multiplied by 3 is equal to 6. 乘
verb [vt. 及物动词]乘
6 multiplied by 2 equals 12. 6乘以2等于12。
verb [vt. 及物动词]增加(multiply 的过去式)
Our problems have multiplied since last year. 自去年以来,我们的问题成倍增加。