Mco
[医][=massachusetts college of optometry]马萨诸塞州视力测定法学会
🗣️ 情景例句
Food is necessary to maintain life.
食物是维持生命所必须的。
I'm two years older than you are.
我比你小2岁。
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。