Branchiostegite
鳃盖; 鳃甲
🗣️ 情景例句
Hi! What happened?
嗨 ！怎么回事？
Do you often doubt yourself?
你时常怀疑自己吗？
that a series of deep soundings was obtained in the Atlantic and the first samples were collected by dredging the bottom.
才在大西洋测得一个个海水深度，同时通过挖掘海底，取得了研究海底的首批样品。