The simplest grammar, long thought to be one of the skills that separate man from the animal, can be taught to a common songbird, new research suggests.

• 据美联社报道，最简单的语法一直以来被认为是人区别于动物的技能之一，但新的研究表明，普通的鸣鸟也有掌握简单语法的能力。