给它安装无线电设备是很困难的,而且仅凭肉眼观测也太不可靠,无法对它的行为进行确切的观察。
Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior.
他们还被禁止拥有无线电设备,并受到宵禁。
They were also banned from owning radios, and were subject to a curfew.
无线电设备将一个营救人员电子声音信号转换成电磁波。
A radio converts the electronic signals of a rescuer's voice into magnetic waves.
after all, radios do that.
毕竟是无线电设备发出的。
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