- lesson 1 A puma at large 逃遁的美洲狮1 Pumas are large, cat-like animals which are found in America.美洲狮是一种体形似猫的大 动物,产于美洲。2 When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London, they were not taken seriously.当伦敦动物园接到报告说,在伦敦以南 45英里处发 现一只美洲狮时,这些报告并没有受到重视。3 However, as the evidence began to accumulate, experts from the Zoo felt obliged to investigate,可是,随着证据越来越多,动物园的专家们感到有必要进行一番调查,4 for the descriptions given by people who claimed to have seen