飞机依靠机场的无线电信号标来安全降落。

The airplane relies on the airport's radio ___beacons for a safe landing.

她的善良行为成为指引他人的明灯。

Her kindness has become a ___beacon for others to follow.

机场跑道两侧的无线电信号塔帮助飞行员在恶劣天气中安全降落。

The radio ___beacons on both sides of the runway help pilots land safely in bad weather.