There are bright prospects for freshwater fish farming.淡水养鱼大有可为.Both marine and freshwater fisheries are beset by a number of very serious human impacts.无论海洋渔业还是淡水渔业,都为人类造成的一系列严重影响所困扰.Limnology The scientific study of fr...
直线是两点之间最短的距离.A straight line is the shortest distance between two points.在超级市场里, 坎迪德选一条最短的结账队来排.At the supermarket, Candida chose the shortest checkout line.这是我打过的新中最短的一封信.This is what I have beaten new middle the shorte...
Derivational affix modifies the word lexically which can be divided into prefix, infix and suffix.词缀是一种附加语素,表示词汇意义.可分为前缀 、 中缀和后缀.All employees will refer to each other by the honorific suffix 'san'.所有雇员相互称呼时都须在...
大多数海洋腹足纲软体动物在某些幼体阶段形成一种有纤毛的游泳器官。Most marine gastropod mollusks develop a ciliate swimming organ in certain larval stages.其中,双神经纲3种,瓣鳃纲68种,腹足纲80种.Among them there are 3 species of Amphineura, 68 species of Lamellibranchi...