They have four satellite channels.

他们有4个卫星频道。

《柯林斯英汉双解大词典》

There are at present four television channels.

现在有四个电视频道。

《新英汉大辞典》

All four show distinctive lava channels and other flow features similar to those found on shield volcanoes on Earth.

这四个地方都有独特的熔岩通道和其他类似地球上盾状火山的流动特征。

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Four private channels exist in Venezuela, all ostensibly neutral, while the government has four state-run channels and the regional news network Telesur.

NPR: Last Anti-Chavez TV Station To Be Sold

It provides a five-year forecast of cloud services revenue worldwide, split into four business-size segments, four channels to market and eight geographical regions (see Figure 2).

FORBES: Magazine Article

The BBC alone has four 24-hour news channels (two radio, two TV, one each respectively for domestic and international audiences) along with three TV news bulletins a day, four radio news programmes most days, radio news bulletins, summaries and our online operation.

BBC: Newtown overwhelmed by media