childlike

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Reading all these, I smiled. Maybe the freshness of our childhood is fading away, while the childlike heart hidden deeply has always been with us...
看着这些我笑了，或许儿童时代已经离我们远去，但那颗埋藏在心底的孩童般的心却始终与我们同在。。。
The prevalent term among researchers is now “companion animal,” she said, which is closer to the childlike role they so often play.
她指出现在研究者中流行的术语“动物伙伴”更贴切的表达出它们经常扮演的孩子般的角色。
Another grips the hands of her keeper and swings head over heels with childlike exuberance.
另一只握着饲养员的手，摇着头紧跟着，象和孩子似的兴高采烈。

He was heavily in debt. He was childlike.
So, Christ is that one to whom the little children can come, and I think she cultivates that childlike sense in her self-presentation.
基督是个连小孩都能沟通的人，我认为奥康纳在她的,自我呈现中也营造了那种童稚感。
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He acted and spoke in a childlike way.

No great brand has ever been launched without genuine inspiration, often sensed at the outset with childlike simplicity.
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(of adults) showing the good qualities that children have, such as trusting people, being honest and enthusiastic

You describe someone as childlike when they seem like a child in their character, appearance, or behaviour.