Certificating
vt. 发给证明书（certificate的现在分词形式）
🗣️ 情景例句
Do you think so?
真的这么认为？
He that converses not knows nothing.
不和人交谈的人一无所知。
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。