havev.有；持有；占有；由…组成；显示出；
dov.做，干，办(某事)；(以某种方式)做；行动；表
A new system has been devised to control traffic in the city.
控制城市交通的新系统已经设计出来。
I think you have made an error in calculating the total.
我想你在计算总数时出了差错。
What sort of person would do a thing like that?
什么人会干那样的事呢？
