Thefirst telephone was the precursor of modern communications networks.
最早出现的电话是现代通讯网的雏型。
Do you know the three USA television networks?
你知道美国的三大电视网吗？
The company has a network of shops all over the country.
这家公司有着遍布全国的商店网。
networking详细解释
net.work.ing n.（名词）An informal system whereby persons having common interests or concerns assist each other, as in the exchange of information or the development of professional contacts.人际网：由具有共同兴趣或爱好的人组成的非正式体系。人们互相帮助、互相交换信息或工作联系的进展
