They are in twice daily radio contact with the rebel leader.

他们一天两次通过无线电通信系统与反叛者领导人保持联系。

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For example, all a VFR pilot has to do to enter Class C airspace is establish two-way radio contact with ATC.

例如，VFR 飞行员进入 C 类空域所要做的就是与空中交通管制建立双向无线电联系。

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Soon radio contact is lost.

不久，无线电丢失联络。

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Worse still,after about 20 minutes after the ship takes off, all radio contact between ship and earth will be destroyed.

更坏的是，当飞船起飞20分钟后，所有飞船与地球的无线电通讯都被切断。

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For security reasons, the Indianapolis had been out of radio contact with the Navy.

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The plane did not issue a distress call before losing radar and radio contact, the NTSB said.

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Air traffic controllers re-established radio contact after the plane had flown about 150 miles past its destination.

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