New words and expressions

puma n. 美洲狮

spot v. 看出，发现

evidence  n. 证据

accumulate  v. 积累，积聚

oblige  v. 使……感到必须

hunt  n. 追猎；寻找

blackberry n. 黑莓

Pumas are large, cat-like animals which are found in America. When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London, they were not taken seriously. However, as the evidence began to accumulate, experts from the Zoo felt obliged to investigate, for the descriptions given by people who claimed to have seen the puma were extraordinarily similar.

美洲狮是一种体形似猫的大动物，产于美洲。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。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，因为凡是声称见到过美洲狮的人们所描述的情况竟是出奇地相似。

The hunt for the puma began in a small village where a woman picking b