communication

n.通讯，交流；传达；(pl.)通信系统

common law, common noun, common sense, common time, common-room, commoner, commonly, commonplace, commons, commonsense, commonsensical, commonwealth, commotion, communal, communally, commune, communicable, communicant, communicate, communicate with, communication cord, communicative, communicator, communion, communique, communism, communist, communistic, community, community centre, community chest, community home, community singing, commutable, commutation, commutator, commute, commuter, compact, compact disc,