像编写用例，编写用户经历都是一种需要学习和实践的能力。
Like writing use cases, writing user stories is a skill that must be learned and practiced.
天生的能力好像天然生成的植物，必须通过学习加以修整；然而学习本身如若不由实践去约束，必然方向纷杂而漫无目的。
Natural abilities are like natural plants, that need pruning by study, and studies themselves do give forth directions too much at large, except they be bounded in by experience.
这就是他们学习、感受、实践、创造、表达情感、练习社交、提高语言和数学能力的方式，也是他们看待世界的新方法。
It's how they learn, experiment, tinker, express creativity, work through feelings, practice socialization, develop language and math skills, and see the world in new ways.
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