一位动物学家对生活在非洲大草原奥兰治河两岸的羚羊群进行过研究。他发现东岸的羚羊群的繁殖能力比西岸的强,奔跑速度也不一样,每分钟要比西岸的快13米。 对这些差别,这位动物学家曾百思不得其解,因为这些羚羊的生存环境和属类都是相同的,饲料来源也一样,全以一种叫莺萝的牧草为主。 有一年他在动物保护协会的协助下,在东西两岸各捉了10只羚羊,把它们分别送往对岸,结果运到西岸的1O只一年后繁殖到14只,送到东岸的10只只剩下3只,那7只全被狼吃 A zoologist studied the antelopes living on both sides of the Orange River in the African savannah. He found that the antelopes in the east coast are more capable of multiplying than the West Bank and run at a speed of 13 meters faster per minute than the West Bank. To these differences, the zoologist once baffled, because the living environment and genus of these antelopes are the same, the same source of feed, all with a kind of warbler-based grass. One year, with the help of the Animal Protection Society, he collected 10 antelopes on both east and west sides and sent them to the other side respectively. As a result, 10 animals that had been transported to the West Bank only fled to 14 after a year and 10 to the east coast Only three left, that seven were all eaten by the wolf