Anomocoela
異凹亞目
??? 情景例句
I've been thinking a lot about our responsibilities
我對于我們的職責(zé)想了很多
Don't be afraid.
不用擔(dān)心！
So was born the echo-sounding apparatus, now in general use in ships.
這樣就產(chǎn)生了目前各種船舶上普遍應(yīng)用的回聲探測儀。