Machicolis
[军]突堞, 凸堞枪眼
🗣️ 情景例句
I was really worried.
刚才我真的很担心。
I have nothing to do with it.
那与我无关。
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。