Quadrumvir
n. 四人团体中的一员
🗣️ 情景例句
You're making the right decision
你做了一个正确的决定
A wise head makes a close mouth.
智者寡言。
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。