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| 1. | A communication channel, of which each end can simultaneously transmit and receive. |
| 一种两端都能同时发送和接收报文的(通信)信道。 |
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| 2. | With the development of television, and the technical advance which made it possible to receive and transmit |
| 接着发明了电视以及可以用同一台电视机同时收发，私生活就宣告结束。 |
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| 3. | a group of broadcasting stations that all transmit the same program simultaneously. |
| 同时传送相同的节目的广播站。 |
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