Splintlet
小夹板
🗣️ 情景例句
John proposed marriage to Helen.
绚翰向沦论求婚。
It's been cloudy all morning.
整个早上多云。
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。