在20世纪80年代的一次供过于求中，羊的价格一度低至每只50美分，但如今一些品种的母羊可以卖到每只200美元。
Sheep once sold for as little as 50 cents each during a glut in the 1980s, but today some breeds of ewe can sell for as much as $200 a pop.
研究者认为由于淡水中能见度低，动物可能会更多的依靠声音。
Researchers thought some freshwater species might rely on sound because of poor visibility. So they collected water boatmen from a stream and pond in France.
就本身而言，共同基金比对冲基金自由度低，因而对冲型的共同基金获得高额回报的机会也较少。
By definition, mutual funds have less freedom than hedge funds, so there is less scope for hedge-style mutual funds to earn outsize returns.
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