Porochrom
白色硅藻土载体
🗣️ 情景例句
I am a representative of Politics Association.
我是政治协会的代表。
Eagles fly alone, but sheep flock together.
鹰单飞，羊群集。
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。