If you used to tune to television stations in towns that send signals in opposite directions, you may have to choose which antenna you want most.

如果你过去经常调到镇上那些信号发射方向相反的电视台，那就只好选择你最想要的朝向的天线。

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But if you used to tune to television stations in towns in opposite directions, you may have to choose which ones you want most.

但是如果你习惯调到镇上那些信号发射方向相反的电视台，那就只好选择你最想要的朝向的天线。

youdao

For one thing, white-space transmitters have to avoid interfering with both local television stations and the wireless microphones used in conference halls, sports arenas, theatres and churches.

首先，空白频段发射机必须避免与本地电视台互相干扰，也得防止同会议室、运动场、剧院和教堂使用的无线麦克风相互干扰。

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The only video recorders at the time were huge Ampex reel-to-reel machines used by television stations to rebroadcast live shows in later time zones.

ECONOMIST: The battle to succeed the DVD has only just begun

For one thing, white-space transmitters have to avoid interfering with both local television stations and the wireless microphones used in conference halls, sports arenas, theatres and churches.

ECONOMIST: Difference Engine