Hellschreiber system
[电] 赫尔希来伯系统
🧩 词语组成解析
🗣️ 情景例句
How much time will it take for my mail to get to where it is going?
我的信件到达它要去的地方要用多少时间？
We can't draw well.
我们不能画那么多。
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。