1.  childishness
2.  childlike innocence
3.  playfulness

• 1. 童心: Childlike innocence | childlike | a childish heart
• 2. 童心闯未来: Disney's The Kid | The Kid
• 3. 儿童心理学: child psychology

更多释义

• 1.儿童心理学很适合我。
  Child psychology is for me.
  dict.yoduao.com
• 2.尽管儿童心理学者们花了许多时间来研究这个问题，却很少有证据表明电视造成了青少年犯罪。
  Although child psychologists have spent a great deal of time studying this problem, there is not much evidence that television brings about juvenile delinquency.
  dict.yoduao.com
• 3.儿童心理学，或者更宽泛的说，发展心理学，并不仅仅是关于孩子的研究，还是关于你和我、以及我们如何成为现在这个样子的研究。
  Child psychology,—or more broadly, developmental psychology, is not just the study of children but the study of you and me and how we came to be this way.
  dict.yoduao.com

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