英文：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.
中文：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
英文：By lectures, excavations and other contacts, I took the museum into the highways and byways of Wales.
中文：通过演说，展示文物以及其它方面的接触，我把博物馆收藏的一切传遍威尔士的各个角落。
英文：The switches close the contacts and complete the circuit.
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