___________________________________________ The find suggests that New Zealand has been home to walking bats for more than 16 million years. Although thought to have underweighted forty grams, the ancient species were three times larger than its modern cousins. BBC world news. __________________________________这一发现表明,新西兰在1600万年前起就是行走蝙蝠的故乡.尽管该类蝙蝠体重不足40克,但它比现代的蝙蝠要重三倍.英国广播公司世界新闻.