Verdin
n. [鸟](北美)黄头小山雀
🗣️ 情景例句
I believe my English fluency is quite good.
我认为自己的英语相当的流利。
He's a doctor.
他是医生。
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。