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- Bell introduces crossbar central office switches. 贝尔实验室纵横中央局交换机问世。
- With 22.21 million lines added,the office exchange capacity stood at 135 million lines. 局用电话交换机容量新增2221万门，达到1.;35亿门。
- A gateway sits between a telephone system, such as a PBX or a central office switch, and a data network, such as the Internet, and translates calls from one format to another. 网关置于电话系统（如专用小交换机或者电话局内的交换机）和数据网络（如因特网）之间，把电话呼叫从一种格式变成另一种格式。
- Centrex uses the telephone company's central office exchange to route internal calls back to an extension. Centrex使用电话公司的中央办公室交换机将内部电话又路由回到分机号码上。
- With 22.21 million lines added, the office exchange capacity stood at 135 million lines. 局用电话交换机容量新增2221万门，达到1.;35亿门。
- A gateway sits between a telephone system,such as a PBX or a central office switch,and a data network,such as the Internet,and translates calls from one format to another. 网关置于电话系统（如专用小交换机或者电话局内的交换机）和数据网络（如因特网）之间，把电话呼叫从一种格式变成另一种格式。
- Using a personal computer and modem it became possible to commandeer a phone company's digital central office switch by dialing in remotely, and Kevin became adept at doing so. 使用它变成可能的藉由拨征募电话公司的数传中央办公室开关的一个个人计算机和调制解调器在很远地，而且凯文在这么做变成熟练。
- By the end of 2002,the total capacity of office exchanges reached 283.58 million gates,including 27.92 million gates of newly increased capacity during the year. 2002年新增局用交换机2792万门，总容量达到28358万门。
- Routine office work is my bread and butter. 日常的办公室工作是我的谋生之道。
- When the two ships were within call,their officers exchanged messages. 当这两条船靠得很近时，他们的高级船员交换了信息。
- By the end of 2002, the total capacity of office exchanges reached 283.58 million gates, including 27.92 million gates of newly increased capacity during the year. 全年新增局用交换机2792万门，总容量达到28358万门。
- When the two ships were within call, their officers exchanged messages. 当这两条船靠得很近时，他们的高级船员交换了信息。
- A digital central office switching system made by Lucent. It is typically used as an "tandem switching office, switching long distance phone calls. See 5ESS. 朗讯公司生产的一种数字市话局交换系统。通常作为一种汇接交换局，转接长途电话。参见5ESS。
- The Regulations on the Appointment and Removal of the PLA Officers in Active Service promulgated by the CMC in January 2002 lays down concrete stipulations on the condition,scope,organization and implementation of officer exchange. 2002年1月中央军委颁布的《中国人民解放军现役军官职务任免条例》，对军官交流的条件、范围以及组织实施等做出了具体规定。
- She is a receptionist in a doctor's office. 她在一位医生的诊所中担任接待员。
- The officers exchanged salutes. 军官们互致敬礼。
- Be sure to switch off the light when you leave the office. 你离开办公室时务必把灯关掉。
- He is gunned down in the street outside his office. 他在他办公室外的街上被枪杀。
- Every day he rode his old bicycle to his office. 每天他骑着他那辆旧自行车去上班。
- The sale office is on line to the warehouse. 营业部与仓库的计算机联网。
