Apodacea
无足亚纲
🗣️ 情景例句
Doesn't show.
看不出来。
My underwear is black.
我的内衣是黑色的。
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。