holding bi-monthly teleconferences举行双月电信会议;包括在国家访问前合用职权范围;合用任务报告;举行年度会议
Echo cancellation is of major importance in MODEM, long distance telephone, hands-free telephone and teleconference.
而在调制解调器、长途电话、免提电话和电话会议系统中，回波消除技术占有极其重要的地位。
参考来源 - 视频对象分割技术的研究N-COUNT（可数名词） A teleconference is a meeting involving people in various places around the world who use telephones or video links to communicate with each other. 电话会议; 视频会议 [商业]
Managers at their factory hold a two-hour teleconference with head office every day.
他们工厂的经理们每天与总部举行两小时的电话会议。
N-UNCOUNT（不可数名词） teleconferencing 电话会议; 视频会议
...teleconferencing facilities.
…电话会议设备。