亡者归来：三分之一绝种动物再现世间

屈联西

　　According to the International Union for the Conservation of Nature, 22 per cent of the world's mammals are at risk of extinction. In Britain, more than two plant and animal species are being wiped out each year。据世界自然保护联盟称，世界上22%的哺乳动物正面临绝种的危险。在英国，每年消失的植物和动物物种都在两个以上。