人类能从动物的“想法”中学到什么？本文带你发现！ 两千多年来，精妙而令人叹服的“自然阶梯”理论（the ladder of nature）从人类本能出发，描绘着世界运转的方式。这一权威理论之中，上...
People can learn from animals "ideas"? This article take you found! More than two thousand years, great and marvelous "natural step" theory (the ladder of nature) from human instinct, depict the world go round the way. This authoritative theory,...
