Most antennas are made in the shape of a dish to collect and reflect the radio waves to the sub reflector, in the same way as a curved mirror focuses visible light to one point.
大多数天线被制成碟形，用以收集和反射无线电波至亚反射器，就像曲面镜将可见光聚焦于一点一样。
The Cincinnati-based company created one of the first radio soap operas as a way to market its products, and years later it created its own soap operas, including “As the World Turns,” for television.
这家辛辛那提市为总部的总司首创了广播肥皂剧来推销公司产品并且在数年之后拥有了自己的肥皂剧，包括电视版的《让世界转动》。
Ms Dozier wears a two-way radio to deal with problems the minute they arise. One is small: the girls' toilets have no paper towels.
戴着双通无线电的她，问题刚一出现，就要去解决了：第一个问题很简单，女生厕所没有卷纸，另一个问题就有点麻烦，楼上有人在吵架。
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