By definition, development is not just more of the same, just as an adult is not just a big baby. The process involves adding and combining new and existing capabilities to support more diverse and complex activities.
根据定义，并不是让一样的东西变多，正如成年人并不是大一点的婴儿。发展过程包括增加和结合新的和已有的能力以支持更多样、更复杂的行为。