Radiobeacon
无线电航标
🗣️ 情景例句
And you saved it for me, didn't you, Mother?
也留着要给我， 对吗， 妈妈？
What shall I give him for his Easter?
我要给他什么东西作为复活节礼物？
when a significant number of people are living permanently in space.
如果有相当数量的人永久性地住在太空，