Fifth columnist
n. 第五纵队队员, 间谍
🧩 词语组成解析
columnist
['kɑləmnɪst]
n. 专栏作家;
🗣️ 情景例句
You are the very person we want.
你就是我们要的人选。
What would you like to eat?
你想吃什么？
So was born the echo-sounding apparatus, now in general use in ships.
这样就产生了目前各种船舶上普遍应用的回声探测仪。