Radio observation
无线电观测
🧩 词语组成解析
🗣️ 情景例句
He's a friend.
他是位朋友。
Would you like to have some dinner?
你想吃饭吗？
His father told everybody that Eric had been killed in action.
他的父亲告诉大家，埃里克在战争中被打死了。