And if there is a struggle for life, such that nearly all of these creatures die -- and this can't be doubted, I've read Malthus and I've calculated how long it would take for elephants to cover the whole world if they bred unrestricted, and so on and so on.
如果为生存竞争， 好像几乎所有这些生物都死亡-- 那是不可能的，我读过马尔萨斯 我也计算过大象要花多长时间 来遍布全球，如果它们无限制的繁殖，等等等等。