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：人際網由具有共同興趣或愛好的人組成的非正式體系。人們互相幫助、互相交換信息或工作聯系的進展
英文：By lectures, excavations and other contacts, I took the museum into the highways and byways of Wales.
中文：通過演說，展示文物以及其它方面的接觸，我把博物館收藏的一切傳遍威爾士的各個角落。
英文：The switches close the contacts and complete the circuit.
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