Brown had rigged a wireless set with a 250-mile range. With it, they could check their position and, if they were forced down, spell out an SOS. 布朗装了一部有效范围为二百五十英里的无线电收发报机，以便查对他们的位置，还可以在万一被迫降落时发出 sos求援信号。
He sent the wireless set there to be mended . 他把无线电送那儿去修理。
He sent the wireless set there to be mended. 他把无线电送那儿去修理。
He offered to mend the wireless set for me. 他主动提出要帮我修理收音机。
How do I know if a wireless network is secure? 如何知道无线网络是否安全?
Data packet transmission over a wireless network. 透过无线网路传送数据。