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...
如不努力工作, 你就一事无成.If you don't work hard, you'll end up nowhere.她抱怨他工作不努力.She complained that he did not work hard.如果你不努力争取,你就得赔偿.Unless you push your claims you'll get no satisfaction....