有史以来对老虎的栖息地最全面的科学研究发现，老虎现在的栖息地比10年前人们认为的面积减少了40％。这些老虎现在的活动范围只占历史活动范围的7％。

         (Words: about 300; Time: 3.5 minutes)
        Tiger habitats worldwide have shrunk by 40 percent in the past decade and their survival depends on cracking down on illegal hunting, working to reduce conflicts with humans, and protecting key ranges (动植物分布区), according to a study, the most thorough ever.
        The tiger population has steadily declined to about 7,500 globally, and the big cats continue to face many threats — including the trade for medical purpose in Asia. Now,