Equination
马痘接种
🗣️ 情景例句
Come in. Oh, Carl and David.
哦，是卡尔和大卫，请进。
What can I say?
我能说些什么呢?
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。