Our planet has been losing large mammals for a long time, and if current trends continue, some researchers believe the largest terrestrial mammal in 200 years could well be the domestic cow.

我们的星球长期以来一直在失去大型哺乳动物， 如果目前的趋势继续下去，一些研究人员认为 200 年来最大的陆生哺乳动物很可能是家养牛。