Callsigns
(callsign 的复数) n. 通信呼号
🗣️ 情景例句
Dad often works late,
爸爸老是工作到很晚，
I remember the girl whose father goes there every winter.
我记得那个女孩的父亲每年冬天都去那里。
You are never too old to learn.
活到老，学到老。