translation.en: So we might engage a rat, for example, to acquire a new skill or ability that might involve the rat using its paw to master particular manual grasp behaviors just like we might examine a child and their ability to acquire the sub-skills, or the general overall skill of accomplishing something like mastering the ability to read.
translation.zh: 举例来说，我们可能研究一只 老鼠是如何获得新技能或能力的， 这技能可能是用它的爪子 掌握一个特定的抓握行动， 与此类同的是，我们可能会研究一个孩子 研究他们如何获得 像掌握阅读的整体技能 或其中的次级技能。