Schizamnion
裂隙羊膜
🗣️ 情景例句
You're welcome.
不客气。
Everything new is fine.
新事物总是美好的。
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。