has是什么意思译

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。

The company has a long tradition of fine design.

这家公司的优秀设计历史悠久。

The country has a poor record on human rights.

这个国家人权记录不佳。

The information has been placed in the public domain.

这资料不受版权保护。

He has carried out extensive research into renewable energy sources.

他已经对再生能源进行了广泛研究。