Plankton and nekton are pelagic organisms.浮游生物和自游生物都是海面的生物.The fish live on the plankton.这种鱼靠吃浮游生物为生。Plankton is at the bottom of the marine food chain.浮游生物处于海洋食物链的最底层.Krill swam with the plankton , a school of young men...
我收到一条留言，说你想跟我联系。I got a message you were trying to reach me.收到他的好消息让我欣喜若狂。I was so thrilled to get a good report from him.几天前，他收到劳埃德勋爵发来的一封电报。A few days earlier he had received a telegram from Lord Lloyd....
Objective To inquire into an effective treatment for with injurious cataract accompanied by iridocoloboma or aniridia.目的探讨外伤双性白内障伴无虹膜或虹膜缺损患者的有效治疗方法.Objective To study the preliminary effects of modified black diaphragm i...