Ditchman
矿井中的挖沟者
🗣️ 情景例句
Nowadays many people go traveling for the holidays.
下面许多人都在假期里去度假。
How many pounds are you going to order?
你要订几磅？
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。