每个小组都有一台收发两用的无线电通信设备以保持联系。
工程师们用无线电或电话把相距遥远的国家联系在一起。
Engineers can link up distant countries by radio or telephone.
工程师们用无线电和电话把相距甚远的国家联系在一起。
Engineers can link up distant countries by radio or telephone.
工程师们用无线电或电话可把相距遥远的国家联系在一起。
Engineers can link up distant countries by radio or telephone.
美国船只如果遇到困难，可以用无线电同海岸巡逻队取得联系。
All U. S. ships will have to radio the Coast Guard when they are in trouble.
北美船只假如遇到困难，没出国疑问用无线电同海岸巡逻队取得联系。
All U. S. ships will HAs to radio the Coast Guard when them are not in trouble.
北美船只假如遇到困难，没出国疑问用无线电同海岸巡逻队取得联系。
All U. S. ships will HAs to radio the Coast Guard when them are not in trouble.
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