Radionavigation
[电] 无线电导航
🗣️ 情景例句
It's getting late.
时间不早了。
I only need a thousand more pennies to buy my airplane.
我只要在有一千个一角的铜板，就能买一架飞机了。
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，